diff --git a/manifest.toml b/manifest.toml
new file mode 100644
index 0000000..e90a2da
--- /dev/null
+++ b/manifest.toml
@@ -0,0 +1,74 @@
+packaging_format = 2
+
+id = "decidim"
+name = "Decidim"
+description.en = "Participatory democracy framework,"
+
+version = "0.27.3~ynh1"
+
+maintainers = []
+
+[upstream]
+license = "AGPL-3.0-or-later"
+website = "https://decidim.org/"
+demo = "https://decidim.org/demo/"
+admindoc = "https://docs.decidim.org"
+code = "https://github.com/decidim/decidim"
+cpe = "???" # FIXME: optional but recommended if relevant, this is meant to contain the Common Platform Enumeration, which is sort of a standard id for applications defined by the NIST. In particular, Yunohost may use this is in the future to easily track CVE (=security reports) related to apps. The CPE may be obtained by searching here: https://nvd.nist.gov/products/cpe/search. For example, for Nextcloud, the CPE is 'cpe:2.3:a:nextcloud:nextcloud' (no need to include the version number)
+fund = "???" # FIXME: optional but recommended (or remove if irrelevant / not applicable). This is meant to be an URL where people can financially support this app, especially when its development is based on volunteers and/or financed by its community. YunoHost may later advertise it in the webadmin.
+
+[integration]
+yunohost = ">= 4.3.0"
+architectures = "all" # FIXME: can be replaced by a list of supported archs using the dpkg --print-architecture nomenclature (amd64/i386/armhf/arm64), for example: ["amd64", "i386"]
+multi_instance = true
+ldap = "?" # FIXME: replace with true, false, or "not_relevant". Not to confuse with the "sso" key : the "ldap" key corresponds to wether or not a user *can* login on the app using its YunoHost credentials.
+sso = "?" # FIXME: replace with true, false, or "not_relevant". Not to confuse with the "ldap" key : the "sso" key corresponds to wether or not a user is *automatically logged-in* on the app when logged-in on the YunoHost portal.
+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]
+    # this is a generic question - ask strings are automatically handled by Yunohost's core
+    type = "domain"
+    full_domain = true
+
+    [install.init_main_permission]
+    type = "group"
+    default = "visitors"
+
+    [install.language]
+    ask.en = "Choose the application language"
+    ask.fr = "Choisissez la langue de l'application"
+    type = "string"
+    choices = ["ca", "cs", "de", "en", "es", "eu", "fi", "fr", "it", "ja", "nl", "pl", "pt", "ro"]
+    default = "en"
+
+    [install.admin]
+    # this is a generic question - ask strings are automatically handled by Yunohost's core
+    type = "user"
+
+    [install.password]
+    # this is a generic question - ask strings are automatically handled by Yunohost's core
+    type = "password"
+
+[resources]
+    [resources.system_user]
+
+    [resources.install_dir]
+
+    [resources.data_dir]
+
+    [resources.permissions]
+    main.url = "/"
+
+    [resources.apt]
+    packages = "postgresql, imagemagick, redis-server, libyaml-dev, libreadline6-dev, libncurses5-dev, libffi-dev, libgdbm-dev, libpq-dev, libicu-dev"
+
+        [[resources.apt.extras]]
+        repo = "deb https://dl.yarnpkg.com/debian/ stable main"
+        key = "https://dl.yarnpkg.com/debian/pubkey.gpg"
+        packages = "yarn"
+
+    [resources.database]
+    type = "postgresql"