diff --git a/conf/systemd.service b/conf/systemd.service
index 96467e7..35cf147 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -6,10 +6,11 @@ After=network.target couchdb.service
 Type=simple
 User=__APP__
 Group=__APP__
-WorkingDirectory=__INSTALL_DIR__/__APP__
-Environment="VENV_DIR=__INSTALL_DIR__/venv/"
-ExecStart=/bin/bash -c "/opt/flohmarkt/venv/bin/uvicorn --host 127.0.0.1 --port 8000 --reload flohmarkt.web:start  2>&1 | /usr/bin/ts '%%Y-%%m-%%d %%H:%%M:%%S'"
-StandardOutput=append:/var/log/__APP__/__APP__.log
+WorkingDirectory=__FLOHMARKT_INSTALL__
+Environment="VENV_DIR=__FLOHMARKT_VENV_DIR__"
+ExecStart=/bin/bash -c "__FLOHMARKT_VENV_DIR__/bin/uvicorn --host 127.0.0.1 --port 8000 --reload flohmarkt.web:start  2>&1 | /usr/bin/ts '%%Y-%%m-%%d %%H:%%M:%%S'"
+# nicer logfile naming https://codeberg.org/flohmarkt/flohmarkt_ynh/issues/38
+StandardOutput=append:/var/log/__ID__/__APP__.log
 StandardError=inherit
 
 # Sandboxing options to harden security
diff --git a/manifest.toml b/manifest.toml
index 3e76fa7..5cb1493 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -54,13 +54,12 @@ ram.runtime = "100M"
     # ask admin on which domain to run flohmarkt
     type = "domain"
 
-# https://codeberg.org/ChriChri/flohmarkt_ynh/issues/4
-#     [install.path]
-#     # ask admin under which path flohmarkt will be reachable
-#     # e.g. 'https://doma.in/path' - might not work, needs to be tested:
-#     # https://codeberg.org/ChriChri/flohmarkt_ynh/issues/4
-#     type = "path"
-#     default = "/"
+    [install.path]
+    # ask admin under which path flohmarkt will be reachable
+    # e.g. 'https://doma.in/path' - might not work, needs to be tested:
+    # https://codeberg.org/ChriChri/flohmarkt_ynh/issues/4
+    type = "path"
+    default = "/"
 
     [install.init_main_permission]
     # who will be able to access the apps URL after installation?
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 944a65e..92bb029 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,6 +4,13 @@
 # COMMON VARIABLES
 #=================================================
 
+# replace '/' by nothing for the path
+if [ "$path" == '/' ]; then url_path=''; else url_path=$path; fi
+# directory flohmarkts software is installed to
+flohmarkt_install="/opt/${id}/${domain}${url_path}/src"
+# diretory the venv for flohmarkt is installed to
+flohmarkt_venv_dir="/opt/${id}/${domain}${url_path}/venv"
+
 #=================================================
 # PERSONAL HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index 7e79ec3..1f84a76 100755
--- a/scripts/install
+++ b/scripts/install
@@ -6,7 +6,11 @@ source /usr/share/yunohost/helpers
 
 # https://codeberg.org/ChriChri/flohmarkt_ynh/issues/9
 # check if couchdb is already installed
-if [[ -e /opt/couchdb ]] || pgrep epmd > /dev/null || pgrep beam.smp || dpkg-query -W couchdb > /dev/null 2>&1; 
+# if there's a couchdb configuration file for flohmarkt we'll assume that couchdb
+# had been installed by flohmarkt and we thus can savely do whatever we want to it
+# with the resulting damage hopefully only influencing flohmarkt instances
+if [[ -e /opt/couchdb ]] || pgrep epmd > /dev/null || pgrep beam.smp || dpkg-query -W couchdb > /dev/null 2>&1 \
+  && ![[ -e /opt/couchdb/etc/local.d/05-flohmarkt.ini ]];
 then
   ynh_die --message="CouchDB already installed on this host - will not proceed."
   exit 1
@@ -58,20 +62,20 @@ systemctl restart couchdb
 systemctl status couchdb
 
 # get flohmarkt
-ynh_setup_source --dest_dir="$install_dir/$app/"
+ynh_setup_source --dest_dir="$flohmarkt_install"
 
 # setup python environment for flohmarkt
-ynh_secure_remove "$install_dir/venv"
-python3 -m venv --without-pip "$install_dir/venv"
+ynh_secure_remove "$flohmarkt_venv_dir"
+python3 -m venv --without-pip "$flohmarkt_venv_dir"
 
 # install python dependencies
 (
     set +o nounset
-    source "$install_dir/venv/bin/activate"
+    source "$flohmarkt_venv_dir/bin/activate"
     set -o nounset
     set -x
-    $install_dir/venv/bin/python3 -m ensurepip
-    $install_dir/venv/bin/pip3 install -r "$install_dir/$app/requirements.txt"
+    $flohmarkt_venv_dir/bin/python3 -m ensurepip
+    $flohmarkt_venv_dir/bin/pip3 install -r "$flohmarkt_install/requirements.txt"
 )
 
 # JwtSecret
@@ -83,14 +87,14 @@ password_couchdb_flohmarkt=$(ynh_string_random --length=31 --filter='A-Za-z0-9_.
 ynh_app_setting_set --app=$app --key=password_couchdb_flohmarkt --value="$password_couchdb_flohmarkt"
 
 # generate flohmarkt.conf
-ynh_add_config --template="../conf/flohmarkt.conf" --destination="$install_dir/$app/flohmarkt.conf"
+ynh_add_config --template="../conf/flohmarkt.conf" --destination="$flohmarkt_install/flohmarkt.conf"
 
 # setup couchdb
 (
     set +o nounset
-    source "$install_dir/venv/bin/activate"
+    source "$flohmarkt_venv_dir/bin/activate"
     set -o nounset
-    cd "$install_dir/$app"
+    cd "$flohmarkt_install"
     # initialize_couchdb seems to re-try on connect problems endlessly blocking the yunohost api
     # give it 45 seconds to finish and then fail
     # https://codeberg.org/ChriChri/flohmarkt_ynh/issues/13
diff --git a/scripts/upgrade b/scripts/upgrade
index e36f6c7..8b2e17b 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -46,30 +46,30 @@ systemctl status couchdb
 
 # install upgrade for flohmarkt
 ynh_script_progression --message="Upgrading flohmarkt..." --weight=4
-ynh_setup_source --dest_dir="$install_dir/$app/"
+ynh_setup_source --dest_dir="$flohmarkt_install/"
 
 ynh_script_progression --message="Upgrading flohmarkt python dependencies..." --weight=5
 # upgrade python environment / install new dependencies
 (
     set +o nounset
-    source "$install_dir/venv/bin/activate"
+    source "$flohmarkt_venv_dir/bin/activate"
     set -o nounset
     set -x
-    $install_dir/venv/bin/python3 -m ensurepip
-    $install_dir/venv/bin/pip3 install -r "$install_dir/$app/requirements.txt"
+    $flohmarkt_venv_dir/bin/python3 -m ensurepip
+    $flohmarkt_venv_dir/bin/pip3 install -r "$flohmarkt_install/requirements.txt"
 )
 
 # upgrade flohmarkt.conf
 ynh_script_progression --message="Upgrading flohmarkt configuration..." --weight=1
-ynh_add_config --template="../conf/flohmarkt.conf" --destination="$install_dir/$app/flohmarkt.conf"
+ynh_add_config --template="../conf/flohmarkt.conf" --destination="$flohmarkt_install/flohmarkt.conf"
 
 ynh_script_progression --message="Upgrading flohmarkt couchdb..." --weight=10
 # run initialize_couchdb.py
 (
     set +o nounset
-    source "$install_dir/venv/bin/activate"
+    source "$flohmarkt_venv_dir/bin/activate"
     set -o nounset
-    cd "$install_dir/$app"
+    cd "$flohmarkt_install"
     # initialize_couchdb seems to re-try on connect problems endlessly blocking the yunohost api
     # give it 45 seconds to finish and then fail
     # https://codeberg.org/ChriChri/flohmarkt_ynh/issues/13