diff --git a/check_process b/check_process
deleted file mode 100644
index 2b1a527..0000000
--- a/check_process
+++ /dev/null
@@ -1,31 +0,0 @@
-# See here for more information
-# https://github.com/YunoHost/package_check#syntax-check_process-file
-
-# Move this file from check_process.default to check_process when you have filled it.
-
-;; Test complet
-	; Manifest
-		domain="domain.tld"	(DOMAIN)
-		admin="john"	(USER)
-		is_public=1	(PUBLIC|public=1|private=0)
-		allow_multimedia_write=1
-	; Checks
-		pkg_linter=1
-		setup_sub_dir=0
-		setup_root=1
-		setup_nourl=0
-		setup_private=1
-		setup_public=1
-		upgrade=1
-		upgrade=1	from_commit=3b5b527e26cb6b530bd51f14c791d1dc15757af4
-		backup_restore=1
-		multi_instance=0
-		port_already_use=0
-		change_url=1
-;;; Options
-Email=
-Notification=none
-;;; Upgrade options
-	; commit=3b5b527e26cb6b530bd51f14c791d1dc15757af4
-		name=Upgrade from March 29
-		manifest_arg=domain=domain.tld&admin=john&is_public=1&allow_multimedia_write=1&
diff --git a/conf/backend.service b/conf/backend.service
index 79557bc..550d25d 100644
--- a/conf/backend.service
+++ b/conf/backend.service
@@ -8,9 +8,9 @@ Requires=postgresql.service
 [Service]
 User=__APP__
 Group=__APP__ 
-EnvironmentFile=__FINALPATH__/librephotos.env
+EnvironmentFile=__INSTALL_DIR__/librephotos.env
 ExecStart=/usr/bin/env bash -c "PATH=__PATH_PREFIX__:$PATH gunicorn --worker-class=gevent --timeout 3600 --bind 127.0.0.1:$BACKEND_PORT --log-level=info ownphotos.wsgi"
-WorkingDirectory=__FINALPATH__/backend
+WorkingDirectory=__INSTALL_DIR__/backend
 StandardOutput=append:/var/log/__APP__/__APP__-backend.log
 StandardError=inherit
 
diff --git a/conf/backend.src b/conf/backend.src
deleted file mode 100644
index 4291c05..0000000
--- a/conf/backend.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/LibrePhotos/librephotos/tarball/11c6994d3c506d835335f596090a13545d72713a
-SOURCE_SUM=0e588d7ed34fa826e8beba3894586b16bb247b00548215190732a1cbec57167b
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=11c6994d3c506d835335f596090a13545d72713a
-SOURCE_EXTRACT=true
diff --git a/conf/cmake.src b/conf/cmake.src
deleted file mode 100644
index b02ef3f..0000000
--- a/conf/cmake.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/Kitware/CMake/releases/download/v3.20.3/cmake-3.20.3-linux-aarch64.tar.gz
-SOURCE_SUM=77620f99e9d5f39cf4a49294c6a68c89a978ecef144894618974b9958efe3c2a
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=cmake-3.20.3-linux-aarch64.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/cmake_amd64.src b/conf/cmake_amd64.src
deleted file mode 100644
index 904d4b5..0000000
--- a/conf/cmake_amd64.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/Kitware/CMake/releases/download/v3.20.3/cmake-3.20.3-linux-x86_64.tar.gz
-SOURCE_SUM=97bf730372f9900b2dfb9206fccbcf92f5c7f3b502148b832e77451aa0f9e0e6
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=cmake-3.20.3-linux-x86_64.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/dlib.src b/conf/dlib.src
deleted file mode 100644
index 8c2eeea..0000000
--- a/conf/dlib.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/davisking/dlib/archive/refs/tags/v19.22.tar.gz
-SOURCE_SUM=5f44b67f762691b92f3e41dcf9c95dd0f4525b59cacb478094e511fdacb5c096
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=v19.22.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/faiss.src b/conf/faiss.src
deleted file mode 100644
index bff08fb..0000000
--- a/conf/faiss.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/facebookresearch/faiss/archive/refs/tags/v1.7.1.tar.gz
-SOURCE_SUM=d676d3107ad41203a49e0afda2630519299dc8666f8d23322cbe1eac0c431871
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=v1.7.1.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/frontend.service b/conf/frontend.service
index dd8a8a9..f7e455a 100644
--- a/conf/frontend.service
+++ b/conf/frontend.service
@@ -5,9 +5,9 @@ Documentation=https://github.com/LibrePhotos/librephotos
 [Service]
 User=__APP__
 Group=__APP__ 
-EnvironmentFile=__FINALPATH__/librephotos.env
+EnvironmentFile=__INSTALL_DIR__/librephotos.env
 ExecStart=/usr/bin/env bash -c "PATH=__PATH_PREFIX__:$PATH  ./node_modules/.bin/serve build -d -l $httpPort"
-WorkingDirectory=__FINALPATH__/frontend
+WorkingDirectory=__INSTALL_DIR__/frontend
 StandardOutput=append:/var/log/__APP__/__APP__-frontend.log
 StandardError=inherit
 
diff --git a/conf/frontend.src b/conf/frontend.src
deleted file mode 100644
index 66e0bad..0000000
--- a/conf/frontend.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/LibrePhotos/librephotos-frontend/tarball/37963756369f11617c456a56f6850b2e8aaf8358
-SOURCE_SUM=085b62550214bd9ffecfefde802b96f3542e6867bb25ff1a830623b598e4c61d
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=37963756369f11617c456a56f6850b2e8aaf8358
-SOURCE_EXTRACT=true
diff --git a/conf/im2txt.src b/conf/im2txt.src
deleted file mode 100644
index 4052617..0000000
--- a/conf/im2txt.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/LibrePhotos/librephotos-docker/releases/download/0.1/im2txt.tar.gz
-SOURCE_SUM=980670c0365c0e32b5fecfc0907bfee4742bcd6a40e0d6ac5692c69bbd49ccc4
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=im2txt.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/image-similarity.service b/conf/image-similarity.service
index 399b1b3..8d91973 100644
--- a/conf/image-similarity.service
+++ b/conf/image-similarity.service
@@ -7,9 +7,9 @@ After=network.target
 [Service]
 User=__APP__
 Group=__APP__ 
-EnvironmentFile=__FINALPATH__/librephotos.env
+EnvironmentFile=__INSTALL_DIR__/librephotos.env
 ExecStart=/usr/bin/env bash -c "PATH=__PATH_PREFIX__:$PATH python3 image_similarity/main.py"
-WorkingDirectory=__FINALPATH__/backend
+WorkingDirectory=__INSTALL_DIR__/backend
 StandardOutput=append:/var/log/__APP__/__APP__-image-similarity.log
 StandardError=inherit
 
diff --git a/conf/miniforge3.src b/conf/miniforge3.src
deleted file mode 100644
index a3fb707..0000000
--- a/conf/miniforge3.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/conda-forge/miniforge/releases/download/4.10.1-4/Miniforge3-4.10.1-4-Linux-aarch64.sh
-SOURCE_SUM=68f11be0b8272b9218f62fa3ba1b7c58783427e65db7b7ba77e7cdf91f099540
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=sh
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=Miniforge3-4.10.1-4-Linux-aarch64.sh
-SOURCE_EXTRACT=false
diff --git a/conf/places365.src b/conf/places365.src
deleted file mode 100644
index 5e4bebb..0000000
--- a/conf/places365.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/LibrePhotos/librephotos-docker/releases/download/0.1/places365.tar.gz
-SOURCE_SUM=27792ffcd1f6a4de7abebdea046dda0916f9cd12eba7bed7b5f51f120f91f0d8
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=places365.tar.gz
-SOURCE_EXTRACT=true
diff --git a/conf/resnet152-b121ed2d.src b/conf/resnet152-b121ed2d.src
deleted file mode 100644
index e056c8f..0000000
--- a/conf/resnet152-b121ed2d.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://download.pytorch.org/models/resnet152-b121ed2d.pth
-SOURCE_SUM=b121ed2db97ec7e9f55a91300ceaf85a326de955e8a4ae09e3a0c8170d27f14f
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=resnet152-b121ed2d.pth
-SOURCE_EXTRACT=false
diff --git a/conf/worker.service b/conf/worker.service
index 6793f7d..255cc84 100644
--- a/conf/worker.service
+++ b/conf/worker.service
@@ -8,9 +8,9 @@ Requires=postgresql.service
 [Service]
 User=__APP__
 Group=__APP__ 
-EnvironmentFile=__FINALPATH__/librephotos.env
+EnvironmentFile=__INSTALL_DIR__/librephotos.env
 ExecStart=/usr/bin/env bash -c "PATH=__PATH_PREFIX__:$PATH python manage.py rqworker default"
-WorkingDirectory=__FINALPATH__/backend
+WorkingDirectory=__INSTALL_DIR__/backend
 StandardOutput=append:/var/log/__APP__/__APP__-worker.log
 StandardError=inherit
 
diff --git a/doc/DESCRIPTION.md b/doc/DESCRIPTION.md
new file mode 100644
index 0000000..76700ab
--- /dev/null
+++ b/doc/DESCRIPTION.md
@@ -0,0 +1 @@
+A photo viewer and manager similar to Google Photos
diff --git a/doc/DESCRIPTION_fr.md b/doc/DESCRIPTION_fr.md
new file mode 100644
index 0000000..3ebfaff
--- /dev/null
+++ b/doc/DESCRIPTION_fr.md
@@ -0,0 +1 @@
+Un gestionnaire de photos semblable à Google Photos
diff --git a/manifest.json b/manifest.json
deleted file mode 100644
index dac86b1..0000000
--- a/manifest.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-    "name": "Librephotos",
-    "id": "librephotos",
-    "packaging_format": 1,
-    "description": {
-        "en": "A photo viewer and manager similar to Google Photos",
-        "fr": "Un gestionnaire de photos semblable à Google Photos"
-    },
-    "version": "0.2021.36~ynh1",
-    "url": "https://github.com/LibrePhotos/librephotos",
-    "upstream": {
-        "license": "MIT",
-        "website": "https://librephotos.com/",
-        "demo": "https://demo2.librephotos.com/ (user: demo, password: demo1234)",
-        "admindoc": "https://docs.librephotos.com/",
-        "userdoc": "https://github.com/LibrePhotos/librephotos",
-        "code": "https://github.com/LibrePhotos/librephotos"
-    },
-    "license": "MIT",
-    "maintainer": {
-        "name": "Jules Bertholet",
-        "email": "jules.berthlet@quoi.xyz"
-    },
-    "requirements": {
-        "yunohost": ">= 4.2.4"
-    },
-    "multi_instance": false,
-    "services": [
-        "nginx",
-        "redis-server",
-        "postgresql"
-    ],
-    "arguments": {
-        "install" : [
-            {
-                "name": "domain",
-                "type": "domain",
-                "example": "example.com"
-            },
-            {
-                "name": "admin",
-                "type": "user",
-                "example": "johndoe"
-            },
-            {
-                "name": "is_public",
-                "type": "boolean",
-                "default": true
-            },
-            {
-                "name": "allow_multimedia_write",
-                "type": "boolean",
-                "default": false,
-                "ask": {
-                    "en": "Allow write access to multimedia directories?",
-                    "fr": "Autoriser la modification des fichiers dans les dossiers multimédia ?"
-                }
-            }
-        ]
-    }
-}
diff --git a/manifest.toml b/manifest.toml
new file mode 100644
index 0000000..2241a13
--- /dev/null
+++ b/manifest.toml
@@ -0,0 +1,162 @@
+packaging_format = 2
+
+id = "librephotos"
+name = "Librephotos"
+description.en = "A photo viewer and manager similar to Google Photos"
+description.fr = "Un gestionnaire de photos semblable à Google Photos"
+
+version = "0.2021.36~ynh1"
+
+maintainers = ["Jules Bertholet"]
+
+[upstream]
+license = "MIT"
+website = "https://librephotos.com"
+demo = "https://demo2.librephotos.com (user: demo, password: demo1234)"
+admindoc = "https://docs.librephotos.com"
+userdoc = "https://github.com/LibrePhotos/librephotos"
+code = "https://github.com/LibrePhotos/librephotos"
+fund = "https://www.paypal.com/donate/?hosted_button_id=5JWVM2UR4LM96"
+
+[integration]
+yunohost = ">= 4.2.4"
+architectures = "all"
+multi_instance = false
+ldap = "false"
+sso = "false"
+disk = "50M" # FIXME: replace with an **estimate** minimum disk requirement. e.g. 20M, 400M, 1G, ...
+ram.build = "50M" # FIXME: replace with an **estimate** minimum ram requirement. e.g. 50M, 400M, 1G, ...
+ram.runtime = "50M" # FIXME: replace with an **estimate** minimum ram requirement. e.g. 50M, 400M, 1G, ...
+
+[install]
+    [install.domain]
+    type = "domain"
+
+    [install.admin]
+    type = "user"
+
+    [install.init_main_permission]
+    type = "group"
+    default = "visitors"
+
+    [install.allow_multimedia_write]
+    ask.en = "Allow write access to multimedia directories?"
+    ask.fr = "Autoriser la modification des fichiers dans les dossiers multimédia ?"
+    type = "boolean"
+    default = false
+
+[resources]
+    [resources.sources]
+        [resources.sources.cmake]
+        url = "https://github.com/Kitware/CMake/releases/download/v3.20.3/cmake-3.20.3-linux-aarch64.tar.gz"
+        sha256 = "77620f99e9d5f39cf4a49294c6a68c89a978ecef144894618974b9958efe3c2a"
+
+        [resources.sources.im2txt]
+        url = "https://github.com/LibrePhotos/librephotos-docker/releases/download/0.1/im2txt.tar.gz"
+        sha256 = "980670c0365c0e32b5fecfc0907bfee4742bcd6a40e0d6ac5692c69bbd49ccc4"
+
+        [resources.sources.resnet152-b121ed2d]
+        url = "https://download.pytorch.org/models/resnet152-b121ed2d.pth"
+        sha256 = "b121ed2db97ec7e9f55a91300ceaf85a326de955e8a4ae09e3a0c8170d27f14f"
+        format = "tar"
+        rename = "resnet152-b121ed2d.pth"
+
+        [resources.sources.backend]
+        url = "https://github.com/LibrePhotos/librephotos/tarball/11c6994d3c506d835335f596090a13545d72713a"
+        sha256 = "0e588d7ed34fa826e8beba3894586b16bb247b00548215190732a1cbec57167b"
+
+        [resources.sources.frontend]
+        url = "https://github.com/LibrePhotos/librephotos-frontend/tarball/37963756369f11617c456a56f6850b2e8aaf8358"
+        sha256 = "085b62550214bd9ffecfefde802b96f3542e6867bb25ff1a830623b598e4c61d"
+
+        [resources.sources.dlib]
+        url = "https://github.com/davisking/dlib/archive/refs/tags/v19.22.tar.gz"
+        sha256 = "5f44b67f762691b92f3e41dcf9c95dd0f4525b59cacb478094e511fdacb5c096"
+
+        [resources.sources.places365]
+        url = "https://github.com/LibrePhotos/librephotos-docker/releases/download/0.1/places365.tar.gz"
+        sha256 = "27792ffcd1f6a4de7abebdea046dda0916f9cd12eba7bed7b5f51f120f91f0d8"
+
+        [resources.sources.faiss]
+        url = "https://github.com/facebookresearch/faiss/archive/refs/tags/v1.7.1.tar.gz"
+        sha256 = "d676d3107ad41203a49e0afda2630519299dc8666f8d23322cbe1eac0c431871"
+
+        [resources.sources.cmake_amd64]
+        url = "https://github.com/Kitware/CMake/releases/download/v3.20.3/cmake-3.20.3-linux-x86_64.tar.gz"
+        sha256 = "97bf730372f9900b2dfb9206fccbcf92f5c7f3b502148b832e77451aa0f9e0e6"
+
+        [resources.sources.miniforge3]
+        url = "https://github.com/conda-forge/miniforge/releases/download/4.10.1-4/Miniforge3-4.10.1-4-Linux-aarch64.sh"
+        sha256 = "68f11be0b8272b9218f62fa3ba1b7c58783427e65db7b7ba77e7cdf91f099540"
+        format = "sh"
+        rename = "Miniforge3-4.10.1-4-Linux-aarch64.sh"
+
+
+    [resources.system_user]
+
+    [resources.install_dir]
+
+    [resources.data_dir]
+
+    [resources.permissions]
+    main.url = "/"
+
+    [resources.ports]
+    main.default = 3000
+    backend.default = 8001
+    similarity.default = 8002
+
+    [resources.database]
+    type = "postgresql"
+
+    [resources.apt]
+    packages = [
+        "curl", "unzip",
+        "git",
+        "bzip2",
+        "build-essential",
+        "libtinfo5",
+        "ca-certificates",
+        "swig",
+        "libpq-dev",
+        "postgresql", "postgresql-contrib", "postgresql-common",
+        "ffmpeg",
+        "libimage-exiftool-perl",
+        "libopenblas-dev",
+        "libmagic1",
+        "libboost-all-dev",
+        "libxrender-dev",
+        "liblapack-dev",
+        "cmake",
+        "libsm6",
+        "libglib2.0-0",
+        "libgl1-mesa-glx",
+        "gfortran",
+        "gunicorn",
+        "libheif-dev",
+        "libssl-dev",
+        "rustc",
+        "liblzma-dev",
+        "python3",
+        "python3-pip",
+        "python3-venv",
+        "imagemagick",
+        "xsel",
+        "nodejs",
+        "npm",
+        "redis-server",
+        "libmagickwand-dev",
+        "libldap2-dev",
+        "libsasl2-dev",
+    ]
+
+    packages_from_raw_bash = """
+    if ! (apt-cache -q=0 show ufraw-batch |& grep ': No packages found' &>/dev/null); then
+        echo ufraw-batch
+    fi
+    """
+
+    [[resources.apt.extras]]
+    repo = "deb https://dl.yarnpkg.com/debian/ stable main"
+    key = "https://dl.yarnpkg.com/debian/pubkey.gpg"
+    packages = "yarn"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 5c65278..7bbfa89 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,27 +4,20 @@
 # COMMON VARIABLES
 #=================================================
 
-# dependencies used by the app
-pkg_dependencies="libtinfo5 unzip ca-certificates swig libpq-dev postgresql postgresql-contrib postgresql-common ffmpeg libimage-exiftool-perl curl libopenblas-dev libmagic1 libboost-all-dev libxrender-dev liblapack-dev git bzip2 cmake build-essential libsm6 libglib2.0-0 libgl1-mesa-glx gfortran gunicorn libheif-dev libssl-dev rustc liblzma-dev python3 python3-pip python3-venv imagemagick xsel nodejs npm redis-server libmagickwand-dev libldap2-dev libsasl2-dev"
-
 arch="$(dpkg --print-architecture)"
 arm64_test=0
 
-if ! (apt-cache -q=0 show ufraw-batch |& grep ': No packages found' &>/dev/null); then
-	pkg_dependencies="$pkg_dependencies ufraw-batch"
-fi
-
 #=================================================
 # PERSONAL HELPERS
 #=================================================
 
 function unpack_source {
-	ynh_secure_remove "$final_path"
-	mkdir -p "$final_path/data_models/"{places365,im2txt}
-	ynh_setup_source --source_id="places365" --dest_dir="$final_path/data_models/places365/"
-	ynh_setup_source --source_id="im2txt" --dest_dir="$final_path/data_models/im2txt/"
+	ynh_secure_remove "$install_dir"
+	mkdir -p "$install_dir/data_models/"{places365,im2txt}
+	ynh_setup_source --source_id="places365" --dest_dir="$install_dir/data_models/places365/"
+	ynh_setup_source --source_id="im2txt" --dest_dir="$install_dir/data_models/im2txt/"
 	mkdir -p "$data_path"
-	ln -sf "$final_path/data_models" "$data_path/data_models"
+	ln -sf "$install_dir/data_models" "$data_path/data_models"
 	mkdir -p "$data_path/protected_media/"{thumbnails_big,square_thumbnails,square_thumbnails_small,faces}
 	mkdir -p "$data_path/data/nextcloud_media"
 	mkdir -p "$data_path/matplotlib"
@@ -32,27 +25,27 @@ function unpack_source {
 	mkdir -p ~/.cache/torch/hub/checkpoints/
 	ynh_setup_source --source_id="resnet152-b121ed2d" --dest_dir="/root/.cache/torch/hub/checkpoints/"
 
-	ynh_setup_source --source_id="backend" --dest_dir="$final_path/backend/"
-	ynh_setup_source --source_id="frontend" --dest_dir="$final_path/frontend/"
-	ynh_setup_source --source_id="dlib" --dest_dir="$final_path/backend/dlib/"
+	ynh_setup_source --source_id="backend" --dest_dir="$install_dir/backend/"
+	ynh_setup_source --source_id="frontend" --dest_dir="$install_dir/frontend/"
+	ynh_setup_source --source_id="dlib" --dest_dir="$install_dir/backend/dlib/"
 	if [ "$arch" = "arm64" ] || [ "$arm64_test" -eq 1 ]; then
-		export CONDA_DIR="$final_path/backend/conda"
+		export CONDA_DIR="$install_dir/backend/conda"
 		mkdir -p "$CONDA_DIR"
 		if [ "$arch" = "arm64" ]; then
 			ynh_setup_source --source_id="miniforge3" --dest_dir="$CONDA_DIR"
-			ynh_setup_source --source_id="cmake" --dest_dir="$final_path/backend/cmake/"
+			ynh_setup_source --source_id="cmake" --dest_dir="$install_dir/backend/cmake/"
 		else
 			wget -O "${CONDA_DIR}/Miniforge3-4.10.1-4-Linux-aarch64.sh" https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh 2>&1
-			ynh_setup_source --source_id="cmake_amd64" --dest_dir="$final_path/backend/cmake/"
+			ynh_setup_source --source_id="cmake_amd64" --dest_dir="$install_dir/backend/cmake/"
 		fi
-			#ynh_setup_source --source_id="faiss" --dest_dir="$final_path/backend/faiss/"
+			#ynh_setup_source --source_id="faiss" --dest_dir="$install_dir/backend/faiss/"
 	fi
 
 	mkdir -p "/var/log/$app"
 }
 
 function set_up_backend {
-	backend_path="$final_path/backend"
+	backend_path="$install_dir/backend"
 	pushd "$backend_path"
 		chown -R $app:$app "$backend_path"
 		sudo -u $app python3 -m venv $backend_path/venv
@@ -111,8 +104,8 @@ function set_node_vars {
 
 function set_up_frontend {
 	set_node_vars
-	frontend_path=$final_path/frontend
-	pushd $final_path/frontend
+	frontend_path=$install_dir/frontend
+	pushd $install_dir/frontend
 		chown -R $app:$app $frontend_path
 		sudo -u $app touch $frontend_path/.yarnrc
 		sudo -u $app env "PATH=$node_PATH" yarn --cache-folder $frontend_path/yarn-cache --use-yarnrc $frontend_path/.yarnrc install 2>&1
@@ -122,7 +115,7 @@ function set_up_frontend {
 	popd
 }
 
-function add_configuations {
+function add_configurations {
 	secret_key=$(ynh_app_setting_get --app=$app --key=secret_key)
 
 	if [ -z $secret_key ]; then
@@ -130,19 +123,19 @@ function add_configuations {
 		ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
 	fi
 
-	ynh_add_config --template="librephotos.env" --destination="$final_path/librephotos.env"
+	ynh_add_config --template="librephotos.env" --destination="$install_dir/librephotos.env"
 }
 
 function upgrade_db {
-	pushd "$final_path/backend"
-		chown -R $app:$app "$final_path/backend"
+	pushd "$install_dir/backend"
+		chown -R $app:$app "$install_dir/backend"
 		chown -R $app:$app "/var/log/$app"
 		sudo -u $app bash -c "
 			set -a
 			export PATH=\"$path_prefix:"'$PATH'"\"
-			source \"$final_path\"/librephotos.env
+			source \"$install_dir\"/librephotos.env
 			python3 manage.py showmigrations
-			python3 manage.py migrate 
+			python3 manage.py migrate
 			python3 manage.py showmigrations
 		" 2>&1
 	popd
@@ -150,11 +143,11 @@ function upgrade_db {
 }
 
 function set_permissions {
-	chown -R root:$app "$final_path"
-	chmod -R g=u,g-w,o-rwx "$final_path"
+	chown -R root:$app "$install_dir"
+	chmod -R g=u,g-w,o-rwx "$install_dir"
 	chown -R $app:$app "$data_path"
 	chmod -R g=u,g-w,o-rwx "$data_path"
-	chown -R $app:$app "$final_path/data_models"
+	chown -R $app:$app "$install_dir/data_models"
 	chown -R $app:$app "/var/log/$app"
 	chmod -R g-w,o-rwx "/var/log/$app"
 	setfacl -n -m user:www-data:rx "$data_path"
diff --git a/scripts/backup b/scripts/backup
index 15f5000..5ead846 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -10,28 +10,6 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	ynh_clean_check_starting
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_print_info --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
-
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
@@ -41,7 +19,7 @@ ynh_print_info --message="Declaring files to be backed up..."
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup --src_path="$final_path"
+ynh_backup --src_path="$install_dir"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
diff --git a/scripts/change_url b/scripts/change_url
index b2db8be..6af5c69 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -9,55 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# RETRIEVE ARGUMENTS
-#=================================================
-
-old_domain=$YNH_APP_OLD_DOMAIN
-old_path=$YNH_APP_OLD_PATH
-
-new_domain=$YNH_APP_NEW_DOMAIN
-new_path="/"
-
-app=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-# Needed for helper "ynh_add_nginx_config"
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-
-#=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
-#=================================================
-ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=30
-
-# Backup the current version of the app
-ynh_backup_before_upgrade
-ynh_clean_setup () {
-	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
-	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
-
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# CHECK WHICH PARTS SHOULD BE CHANGED
-#=================================================
-
-change_domain=0
-if [ "$old_domain" != "$new_domain" ]
-then
-	change_domain=1
-fi
-
-change_path=0
-
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
@@ -75,17 +26,7 @@ ynh_systemd_action --service_name=$app-worker --action="stop" --log_path="/var/l
 #=================================================
 ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1
 
-nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
-
-# Change the domain for NGINX
-if [ $change_domain -eq 1 ]
-then
-	# Delete file checksum for the old conf file location
-	ynh_delete_file_checksum --file="$nginx_conf_path"
-	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
-	# Store file checksum for the new config file location
-	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
-fi
+ynh_change_url_nginx_config
 
 #=================================================
 # GENERIC FINALISATION
@@ -99,13 +40,6 @@ ynh_systemd_action --service_name=$app-frontend --action="start" --log_path="sys
 ynh_systemd_action --service_name=$app-image-similarity --action="start" --log_path="/var/log/$app/image_similarity.log"
 ynh_systemd_action --service_name=$app-worker --action="start" --log_path="/var/log/$app/$app-worker.log"
 
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/install b/scripts/install
index 8603703..4eda21b 100755
--- a/scripts/install
+++ b/scripts/install
@@ -9,85 +9,13 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-ynh_clean_setup () {
-	ynh_clean_check_starting
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
 
-#=================================================
-# RETRIEVE ARGUMENTS FROM THE MANIFEST
-#=================================================
-
-domain=$YNH_APP_ARG_DOMAIN
-path_url="/"
-admin=$YNH_APP_ARG_ADMIN
-is_public=$YNH_APP_ARG_IS_PUBLIC
-allow_multimedia_write=$YNH_APP_ARG_ALLOW_MULTIMEDIA_WRITE
-app=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
-#=================================================
-ynh_script_progression --message="Validating installation parameters..." --weight=1
-
-final_path=/opt/yunohost/$app
-test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
-ynh_app_setting_set --app=$app --key=final_path --value="$final_path"
-
-data_path=/home/yunohost.app/$app
-test ! -e "$data_path" || ynh_die --message="This path already contains a folder"
-ynh_app_setting_set --app=$app --key=data_path --value="$data_path"
-
-# Register (book) web path
-ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
-
-#=================================================
-# STORE SETTINGS FROM MANIFEST
-#=================================================
-ynh_script_progression --message="Storing installation settings..." --weight=1
-
-ynh_app_setting_set --app=$app --key=domain --value=$domain
-ynh_app_setting_set --app=$app --key=path --value=$path_url
-ynh_app_setting_set --app=$app --key=admin --value=$admin
-ynh_app_setting_set --app=$app --key=allow_multimedia_write --value=$allow_multimedia_write
+# Might not be required
+path="/"
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
-# FIND PORTS
-#=================================================
-ynh_script_progression --message="Finding available ports..." --weight=1
-
-# Find an available port
-port=$(ynh_find_port --port=3000)
-ynh_app_setting_set --app=$app --key=port --value=$port
-backend_port=$(ynh_find_port --port=8001)
-ynh_app_setting_set --app=$app --key=backend_port --value=$backend_port
-similarity_port=$(ynh_find_port --port=$(expr $backend_port + 1))
-ynh_app_setting_set --app=$app --key=similarity_port --value=$similarity_port
-
-#=================================================
-# INSTALL DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Installing dependencies..." --weight=5
-
-ynh_install_app_dependencies $pkg_dependencies
-ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
-
-#=================================================
-# CREATE A POSTGRESQL DATABASE
-#=================================================
-ynh_script_progression --message="Creating a PostgreSQL database..." --weight=1
-
-db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
-ynh_psql_test_if_first_run
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -104,14 +32,6 @@ ynh_script_progression --message="Configuring NGINX web server..." --weight=1
 # Create a dedicated NGINX config
 ynh_add_nginx_config backend_port
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Configuring system user..." --weight=1
-
-# Create a system user
-ynh_system_user_create --username=$app --home_dir=$data_path
-
 #=================================================
 # SPECIFIC SETUP
 #=================================================
@@ -134,17 +54,17 @@ set_up_frontend
 ynh_script_progression --message="Configuring systemd services..." --weight=1
 
 # Create dedicated systemd configs
-ynh_add_systemd_config --service=$app-backend --template=backend.service
-ynh_add_systemd_config --service=$app-frontend --template=frontend.service
-ynh_add_systemd_config --service=$app-image-similarity --template=image-similarity.service
-ynh_add_systemd_config --service=$app-worker --template=worker.service
+ynh_add_systemd_config --service="$app-backend"          --template=backend.service
+ynh_add_systemd_config --service="$app-frontend"         --template=frontend.service
+ynh_add_systemd_config --service="$app-image-similarity" --template=image-similarity.service
+ynh_add_systemd_config --service="$app-worker"           --template=worker.service
 
 #=================================================
 # ADD CONFIGURATIONS
 #=================================================
 ynh_script_progression --message="Generating configuration files..." --weight=1
 
-add_configuations
+add_configurations
 
 #=================================================
 # FINALIZE DATABASE
@@ -153,22 +73,22 @@ ynh_script_progression --message="Finalizing database..." --weight=1
 
 upgrade_db
 
-pushd "$final_path/backend"
-	admin_mail="$(ynh_user_get_info $admin 'mail')"
-	sudo -u $app bash -c "
-		set -a
-		export PATH=\"$path_prefix:"'$PATH'"\"
-		source \"$final_path\"/librephotos.env
-		python3 manage.py createsuperuser --noinput --username \"$admin\" --email \"$admin_mail\"
-	" 2>&1
-	for user in $(ynh_user_list); do
-		mail=$(ynh_user_get_info --username="$user" --key=mail)
-		sudo -u $app bash -c "
-			set -a
-			export PATH=\"$path_prefix:"'$PATH'"\"
-			source \"$final_path\"/librephotos.env
-			python3 manage.py shell 
-		" <<< "
+pushd "$install_dir/backend"
+    admin_mail="$(ynh_user_get_info $admin 'mail')"
+    sudo -u $app bash -c "
+        set -a
+        export PATH=\"$path_prefix:"'$PATH'"\"
+        source \"$install_dir\"/librephotos.env
+        python3 manage.py createsuperuser --noinput --username \"$admin\" --email \"$admin_mail\"
+    " 2>&1
+    for user in $(ynh_user_list); do
+        mail=$(ynh_user_get_info --username="$user" --key=mail)
+        sudo -u $app bash -c "
+            set -a
+            export PATH=\"$path_prefix:"'$PATH'"\"
+            source \"$install_dir\"/librephotos.env
+            python3 manage.py shell
+        " <<< "
 from django.contrib.auth import get_user_model
 User = get_user_model()
 try:
@@ -178,7 +98,7 @@ try:
 except User.DoesNotExist:
     User.objects.create_user('$user', email='$mail', scan_directory='/home/yunohost.multimedia/$user/Picture')
 " 2>&1
-	done
+    done
 popd
 
 #=================================================
@@ -188,8 +108,8 @@ ynh_script_progression --message="Adding multimedia directories..." --weight=1
 
 # Build YunoHost multimedia directories
 ynh_multimedia_build_main_dir
-if [ $allow_multimedia_write -eq 1 ]; then
-	ynh_multimedia_addaccess $app
+if [ "$allow_multimedia_write" -eq 1 ]; then
+    ynh_multimedia_addaccess $app
 fi
 
 #=================================================
@@ -231,26 +151,6 @@ ynh_systemd_action --service_name=$app-image-similarity --action="start" --log_p
 ynh_systemd_action --service_name=$app-worker --action="start" --log_path="/var/log/$app/$app-worker.log"
 
 
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Configuring permissions..." --weight=1
-
-# Make app public if necessary
-if [ $is_public -eq 1 ]
-then
-	# Everyone can access the app.
-	# The "main" permission is automatically created before the install script.
-	ynh_permission_update --permission="main" --add="visitors"
-fi
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index e2cbdf3..a29e470 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -9,20 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-port=$(ynh_app_setting_get --app=$app --key=port)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
-
 #=================================================
 # STANDARD REMOVE
 #=================================================
@@ -32,22 +18,10 @@ data_path=$(ynh_app_setting_get --app=$app --key=data_path)
 ynh_script_progression --message="Removing $app services integration..." --weight=1
 
 # Remove the service from the list of services known by YunoHost (added from `yunohost service add`)
-if ynh_exec_warn_less yunohost service status $app-backend >/dev/null ; then
-	yunohost service remove $app-backend
-fi
-
-if ynh_exec_warn_less yunohost service status $app-frontend >/dev/null ; then
-	yunohost service remove $app-frontend
-fi
-
-if ynh_exec_warn_less yunohost service status $app-image-similarity >/dev/null ; then
-	yunohost service remove $app-image-similarity
-fi
-
-if ynh_exec_warn_less yunohost service status $app-worker >/dev/null ; then
-	yunohost service remove $app-worker
-fi
-
+yunohost service remove $app-backend
+yunohost service remove $app-frontend
+yunohost service remove $app-image-similarity
+yunohost service remove $app-worker
 #=================================================
 # STOP AND REMOVE SERVICE
 #=================================================
@@ -59,38 +33,6 @@ ynh_remove_systemd_config --service="$app-frontend"
 ynh_remove_systemd_config --service="$app-image-similarity"
 ynh_remove_systemd_config --service="$app-worker"
 
-#=================================================
-# REMOVE THE POSTGRESQL DATABASE
-#=================================================
-ynh_script_progression --message="Removing the PostgreSQL database..." --weight=1
-
-# Remove a database if it exists, along with the associated user
-ynh_psql_remove_db --db_user=$db_user --db_name=$db_name
-
-#=================================================
-# REMOVE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Removing dependencies..." --weight=30
-
-# Remove metapackage and its dependencies
-ynh_remove_app_dependencies
-
-#=================================================
-# REMOVE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Removing app main directory..." --weight=2
-
-# Remove the app directory securely
-ynh_secure_remove --file="$final_path"
-
-#=================================================
-# REMOVE APP DATA DIR
-#=================================================
-ynh_script_progression --message="Removing app data directory..." --weight=1
-
-# Remove the app directory securely
-ynh_secure_remove --file="$data_path"
-
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
@@ -123,16 +65,6 @@ ynh_remove_nodejs
 # Remove the log files
 ynh_secure_remove --file="/var/log/$app"
 
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# REMOVE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Removing the dedicated system user..." --weight=1
-
-# Delete a system user
-ynh_system_user_delete --username=$app
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 6c6e656..cb5489d 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -10,49 +10,6 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	ynh_clean_check_starting
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
-allow_multimedia_write=$(ynh_app_setting_get --app=$app --key=allow_multimedia_write)
-port=$(ynh_app_setting_get --app=$app --key=port)
-backend_port=$(ynh_app_setting_get --app=$app --key=port)
-similarity_port=$(ynh_app_setting_get --app=$app --key=similarity_port)
-
-
-#=================================================
-# CHECK IF THE APP CAN BE RESTORED
-#=================================================
-ynh_script_progression --message="Validating restoration parameters..." --weight=1
-
-ynh_webpath_available --domain=$domain --path_url=$path_url \
-	|| ynh_die --message="Path not available: ${domain}${path_url}"
-test ! -d $final_path \
-	|| ynh_die --message="There is already a directory: $final_path "
-
-test ! -d $data_path \
-	|| ynh_die --message="There is already a directory: $data_path "
-
 #=================================================
 # STANDARD RESTORATION STEPS
 #=================================================
@@ -66,7 +23,7 @@ ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 #=================================================
 ynh_script_progression --message="Restoring the app main directory..." --weight=1
 
-ynh_restore_file --origin_path="$final_path"
+ynh_restore_file --origin_path="$install_dir"
 
 #=================================================
 # RESTORE THE APP DATA DIR
@@ -77,15 +34,7 @@ ynh_restore_file --origin_path="$data_path" --not_mandatory
 mkdir -p $data_path/protected_media/{thumbnails_big,square_thumbnails,square_thumbnails_small,faces}
 mkdir -p $data_path/data/nextcloud_media
 mkdir -p $data_path/matplotlib
-ln -s $final_path/data_models $data_path/data_models
-
-#=================================================
-# RECREATE THE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..." --weight=1
-
-# Create the dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir=$data_path
+ln -s $install_dir/data_models $data_path/data_models
 
 #=================================================
 # RESTORE VARIOUS FILES
@@ -99,15 +48,6 @@ ynh_restore_file --origin_path="/var/log/$app"
 
 ynh_restore_file --origin_path="/etc/logrotate.d/$app"
 
-#=================================================
-# REINSTALL DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Reinstalling dependencies..." --weight=60
-
-# Define and install dependencies
-ynh_install_app_dependencies $pkg_dependencies
-ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
-
 #=================================================
 # RESTORE USER RIGHTS
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 3339bde..585d87d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,47 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-admin=$(ynh_app_setting_get --app=$app --key=admin)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-language=$(ynh_app_setting_get --app=$app --key=language)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
-port=$(ynh_app_setting_get --app=$app --key=port)
-backend_port=$(ynh_app_setting_get --app=$app --key=backend_port)
-similarity_port=$(ynh_app_setting_get --app=$app --key=similarity_port)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
-allow_multimedia_write=$(ynh_app_setting_get --app=$app --key=allow_multimedia_write)
-
-#=================================================
-# CHECK VERSION
-#=================================================
-
-upgrade_type=$(ynh_check_app_version_changed)
-
-#=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
-#=================================================
-ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=30
-
-# Backup the current version of the app
-ynh_backup_before_upgrade
-ynh_clean_setup () {
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
@@ -77,7 +36,7 @@ fi
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
+if [ "$(ynh_check_app_version_changed)" == "UPGRADE_APP" ]
 then
 	unpack_source
 fi
@@ -90,22 +49,6 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..." -
 # Create a dedicated NGINX config
 ynh_add_nginx_config backend_port
 
-#=================================================
-# UPGRADE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Upgrading dependencies..." --weight=1
-
-ynh_install_app_dependencies $pkg_dependencies
-ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1
-
-# Create a dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir=$data_path
-
 #=================================================
 # SPECIFIC UPGRADE
 #=================================================
@@ -138,7 +81,7 @@ ynh_add_systemd_config --service=$app-worker --template=worker.service
 #=================================================
 ynh_script_progression --message="Generating configuration files..." --weight=1
 
-add_configuations
+add_configurations
 
 #=================================================
 # FINALIZE DATABASE
@@ -196,13 +139,6 @@ ynh_systemd_action --service_name=$app-frontend --action="start" --log_path="sys
 ynh_systemd_action --service_name=$app-image-similarity --action="start" --log_path="/var/log/$app/image_similarity.log"
 ynh_systemd_action --service_name=$app-worker --action="start" --log_path="/var/log/$app/$app-worker.log"
 
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/tests.toml b/tests.toml
new file mode 100644
index 0000000..d405a97
--- /dev/null
+++ b/tests.toml
@@ -0,0 +1,34 @@
+#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/tests.v1.schema.json
+
+test_format = 1.0
+
+[default]
+
+    # ------------
+    # Tests to run
+    # ------------
+
+    exclude = ["install.subdir", "install.multi"]
+    # The test IDs to be used in only/exclude statements are:
+    # * install.root
+    # * install.subdir
+    # * install.nourl
+    # * install.multi
+    # * backup_restore
+    # * upgrade
+    # * upgrade.someCommitId
+    # * change_url
+    # NB: you should NOT need this except if you really have a good reason...
+
+    # -------------------------------
+    # Default args to use for install
+    # -------------------------------
+
+    args.allow_multimedia_write = 1
+
+    # -------------------------------
+    # Commits to test upgrade from
+    # -------------------------------
+
+    test_upgrade_from.3b5b527e.name = "Upgrade from March 29"
+    test_upgrade_from.3b5b527e.args.foo = "bar"