11 files changed, 60 insertions, 95 deletions
diff --git a/docs/installation/alpine_linux_en.md b/docs/installation/alpine_linux_en.md
index 7eb1718f2..13395ff25 100644
--- a/docs/installation/alpine_linux_en.md
+++ b/docs/installation/alpine_linux_en.md
@@ -5,25 +5,7 @@ This guide is a step-by-step installation guide for Alpine Linux. The instructio
 
 It assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.linode.com/docs/tools-reference/custom-kernels-distros/install-alpine-linux-on-your-linode/#configuration). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su -l <username> -s $SHELL -c 'command'` instead.
 
-### Required packages
-
-* `postgresql`
-* `elixir`
-* `erlang`
-* `erlang-parsetools`
-* `erlang-xmerl`
-* `git`
-* `file-dev`
-* Development Tools
-* `cmake`
-
-#### Optional packages used in this guide
-
-* `nginx` (preferred, example configs for other reverse proxies can be found in the repo)
-* `certbot` (or any other ACME client for Let’s Encrypt certificates)
-* `ImageMagick`
-* `ffmpeg`
-* `exiftool`
+{! backend/installation/generic_dependencies.include !}
 
 ### Prepare the system
 
@@ -117,7 +99,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```
 
-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
   * Answer with `yes` if it asks you to install `rebar3`.
   * This may take some time, because parts of pleroma get compiled first.
   * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@@ -240,4 +222,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/arch_linux_en.md b/docs/installation/arch_linux_en.md
index da78c3205..d11deb621 100644
--- a/docs/installation/arch_linux_en.md
+++ b/docs/installation/arch_linux_en.md
@@ -92,7 +92,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```
 
-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
   * Answer with `yes` if it asks you to install `rebar3`.
   * This may take some time, because parts of pleroma get compiled first.
   * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@@ -215,4 +215,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/debian_based_en.md b/docs/installation/debian_based_en.md
index c5687a01e..02682e5b0 100644
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@@ -1,27 +1,9 @@
 # Installing on Debian Based Distributions
 ## Installation
 
-This guide will assume you are on Debian Stretch. This guide should also work with Ubuntu 16.04 and 18.04. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
+This guide will assume you are on Debian 11 (“bullseye”) or later. This guide should also work with Ubuntu 18.04 (“Bionic Beaver”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
 
-### Required packages
-
-* `postgresql` (9.6+, Ubuntu 16.04 comes with 9.5, you can get a newer version from [here](https://www.postgresql.org/download/linux/ubuntu/))
-* `postgresql-contrib` (9.6+, same situtation as above)
-* `elixir` (1.8+, Follow the guide to install from the Erlang Solutions repo or use [asdf](https://github.com/asdf-vm/asdf) as the pleroma user)
-* `erlang-dev`
-* `erlang-nox`
-* `libmagic-dev`
-* `git`
-* `build-essential`
-* `cmake`
-
-#### Optional packages used in this guide
-
-* `nginx` (preferred, example configs for other reverse proxies can be found in the repo)
-* `certbot` (or any other ACME client for Let’s Encrypt certificates)
-* `ImageMagick`
-* `ffmpeg`
-* `exiftool`
+{! backend/installation/generic_dependencies.include !}
 
 ### Prepare the system
 
@@ -40,20 +22,14 @@ sudo apt install git build-essential postgresql postgresql-contrib cmake libmagi
 
 ### Install Elixir and Erlang
 
-* Download and add the Erlang repository:
-
-```shell
-wget -P /tmp/ https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb
-sudo dpkg -i /tmp/erlang-solutions_2.0_all.deb
-```
-
-* Install Elixir and Erlang:
+* Install Elixir and Erlang (you might need to use backports or [asdf](https://github.com/asdf-vm/asdf) on old systems):
 
 ```shell
 sudo apt update
 sudo apt install elixir erlang-dev erlang-nox
 ```
 
+
 ### Optional packages: [`docs/installation/optional/media_graphics_packages.md`](../installation/optional/media_graphics_packages.md)
 
 ```shell
@@ -90,7 +66,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```
 
-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
   * Answer with `yes` if it asks you to install `rebar3`.
   * This may take some time, because parts of pleroma get compiled first.
   * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@@ -202,4 +178,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/debian_based_jp.md b/docs/installation/debian_based_jp.md
index c4bbd4780..3736e857f 100644
--- a/docs/installation/debian_based_jp.md
+++ b/docs/installation/debian_based_jp.md
@@ -89,7 +89,7 @@ sudo -Hu pleroma mix deps.get
 
 * コンフィギュレーションを生成します。
 ```
-sudo -Hu pleroma mix pleroma.instance gen
+sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen
 ```
     * rebar3をインストールしてもよいか聞かれたら、yesを入力してください。
     * このときにpleromaの一部がコンパイルされるため、この処理には時間がかかります。
@@ -103,7 +103,7 @@ sudo -Hu pleroma mv config/{generated_config.exs,prod.secret.exs}
 
 * 先程のコマンドで、すでに `config/setup_db.psql` というファイルが作られています。このファイルをもとに、データベースを作成します。
 ```
-sudo -Hu pleroma mix pleroma.instance gen
+sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen
 ```
 
 * そして、データベースのマイグレーションを実行します。
@@ -191,5 +191,5 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress
 
 インストールについて質問がある、もしくは、うまくいかないときは、以下のところで質問できます。
 
-* [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org)
-* **Freenode** の **#pleroma** IRCチャンネル
+* [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat)
+* **libera.chat** の **#pleroma** IRCチャンネル
diff --git a/docs/installation/freebsd_en.md b/docs/installation/freebsd_en.md
index 2dc466eb8..9cbe0f203 100644
--- a/docs/installation/freebsd_en.md
+++ b/docs/installation/freebsd_en.md
@@ -1,8 +1,10 @@
-# Installing on FreeBSD 
+# Installing on FreeBSD
 
 This document was written for FreeBSD 12.1, but should be work on future releases.
 
-## Required software 
+{! backend/installation/generic_dependencies.include !}
+
+## Installing software used in this guide
 
 This assumes the target system has `pkg(8)`.
 
@@ -54,7 +56,7 @@ Configure Pleroma. Note that you need a domain name at this point:
 ```
 $ cd /home/pleroma/pleroma
 $ mix deps.get # Enter "y" when asked to install Hex
-$ mix pleroma.instance gen # You will be asked a few questions here.
+$ MIX_ENV=prod mix pleroma.instance gen # You will be asked a few questions here.
 $ cp config/generated_config.exs config/prod.secret.exs
 ```
 
@@ -213,4 +215,4 @@ incorrect timestamps. You should have ntpd running.
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/generic_dependencies.include b/docs/installation/generic_dependencies.include
new file mode 100644
index 000000000..baed19de0
--- /dev/null
+++ b/docs/installation/generic_dependencies.include
@@ -0,0 +1,16 @@
+## Required dependencies
+
+* PostgreSQL 9.6+
+* Elixir 1.9+
+* Erlang OTP 22.2+
+* git
+* file / libmagic
+* gcc (clang might also work)
+* GNU make
+* CMake
+
+## Optionnal dependencies
+
+* ImageMagick
+* FFmpeg
+* exiftool
diff --git a/docs/installation/gentoo_en.md b/docs/installation/gentoo_en.md
index f2380ab72..982ab52d2 100644
--- a/docs/installation/gentoo_en.md
+++ b/docs/installation/gentoo_en.md
@@ -3,9 +3,7 @@
 
 This guide will assume that you have administrative rights, either as root or a user with [sudo permissions](https://wiki.gentoo.org/wiki/Sudo). Lines that begin with `#` indicate that they should be run as the superuser. Lines using `$` should be run as the indicated user, e.g. `pleroma$` should be run as the `pleroma` user.
 
-### Configuring your hostname (optional)
-
-If you would like your prompt to permanently include your host/domain, change `/etc/conf.d/hostname` to your hostname. You can reboot or use the `hostname` command to make immediate changes.
+{! backend/installation/generic_dependencies.include !}
 
 ### Your make.conf, package.use, and USE flags
 
@@ -54,7 +52,7 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
  # emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake sys-apps/file
 ```
 
-If you would not like to install the optional packages, remove them from this line. 
+If you would not like to install the optional packages, remove them from this line.
 
 If you're running this from a low-powered virtual machine, it should work though it will take some time. There were no issues on a VPS with a single core and 1GB of RAM; if you are using an even more limited device and run into issues, you can try creating a swapfile or use a more powerful machine running Gentoo to [cross build](https://wiki.gentoo.org/wiki/Cross_build_environment). If you have a wait ahead of you, now would be a good time to take a break, strech a bit, refresh your beverage of choice and/or get a snack, and reply to Arch users' posts with "I use Gentoo btw" as we do.
 
@@ -79,12 +77,12 @@ The output from emerging postgresql should give you a command for initializing t
 ```
 
 * Start postgres and enable the system service
- 
+
 ```shell
  # /etc/init.d/postgresql-11 start
  # rc-update add postgresql-11 default
  ```
- 
+
 ### A note on licenses, the AGPL, and deployment procedures
 
 If you do not plan to make any modifications to your Pleroma instance, cloning directly from the main repo will get you what you need. However, if you plan on doing any contributions to upstream development, making changes or modifications to your instance, making custom themes, or want to play around--and let's be honest here, if you're using Gentoo that is most likely you--you will save yourself a lot of headache later if you take the time right now to fork the Pleroma repo and use that in the following section.
@@ -135,7 +133,7 @@ pleroma$ mix deps.get
 * Generate the configuration:
 
 ```shell
-pleroma$ mix pleroma.instance gen
+pleroma$ MIX_ENV=prod mix pleroma.instance gen
 ```
 
   * Answer with `yes` if it asks you to install `rebar3`.
@@ -241,7 +239,7 @@ First, ensure that the command you will be installing into your crontab works.
  # /usr/bin/certbot renew --nginx
 ```
 
-Assuming not much time has passed since you got certbot working a few steps ago, you should get a message for all domains you installed certificates for saying `Cert not yet due for renewal`. 
+Assuming not much time has passed since you got certbot working a few steps ago, you should get a message for all domains you installed certificates for saying `Cert not yet due for renewal`.
 
 Now, run crontab as a superuser with `crontab -e` or `sudo crontab -e` as appropriate, and add the following line to your cron:
 
@@ -298,4 +296,4 @@ If you opted to allow sudo for the `pleroma` user but would like to remove the a
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/netbsd_en.md b/docs/installation/netbsd_en.md
index 233cf28b7..41b3b0072 100644
--- a/docs/installation/netbsd_en.md
+++ b/docs/installation/netbsd_en.md
@@ -1,6 +1,8 @@
 # Installing on NetBSD
 
-## Required software 
+{! backend/installation/generic_dependencies.include !}
+
+## Installing software used in this guide
 
 pkgin should have been installed by the NetBSD installer if you selected
 the right options. If it isn't installed, install it using pkg_add.
@@ -71,7 +73,7 @@ Configure Pleroma. Note that you need a domain name at this point:
 ```
 $ cd /home/pleroma/pleroma
 $ mix deps.get
-$ mix pleroma.instance gen # You will be asked a few questions here.
+$ MIX_ENV=prod mix pleroma.instance gen # You will be asked a few questions here.
 ```
 
 Since Postgres is configured, we can now initialize the database. There should
@@ -193,8 +195,6 @@ Run `# /etc/rc.d/pleroma start` to start Pleroma.
 
 Restart nginx with `# /etc/rc.d/nginx restart` and you should be up and running.
 
-If you need further help, contact niaa on freenode.
-
 Make sure your time is in sync, or other instances will receive your posts with
 incorrect timestamps. You should have ntpd running.
 
@@ -208,4 +208,4 @@ incorrect timestamps. You should have ntpd running.
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/openbsd_en.md b/docs/installation/openbsd_en.md
index 0e1269ca5..c80c8f678 100644
--- a/docs/installation/openbsd_en.md
+++ b/docs/installation/openbsd_en.md
@@ -4,18 +4,10 @@ This guide describes the installation and configuration of pleroma (and the requ
 
 For any additional information regarding commands and configuration files mentioned here, check the man pages [online](https://man.openbsd.org/) or directly on your server with the man command.
 
-#### Required software
-
-The following packages need to be installed:
+{! backend/installation/generic_dependencies.include !}
 
-  * elixir
-  * gmake
-  * git
-  * postgresql-server
-  * postgresql-contrib
-  * cmake
-  * ffmpeg
-  * ImageMagick
+### Preparing the system
+#### Required software
 
 To install them, run the following command (with doas or as root):
 
@@ -239,7 +231,7 @@ Enter a shell as \_pleroma (as root `su _pleroma -`) and enter pleroma's install
 Then follow the main installation guide:
 
   * run `mix deps.get`
-  * run `mix pleroma.instance gen` and enter your instance's information when asked
+  * run `MIX_ENV=prod mix pleroma.instance gen` and enter your instance's information when asked
   * copy config/generated\_config.exs to config/prod.secret.exs. The default values should be sufficient but you should edit it and check that everything seems OK.
   * exit your current shell back to a root one and run `psql -U postgres -f /home/_pleroma/pleroma/config/setup_db.psql` to setup the database.
   * return to a \_pleroma shell into pleroma's installation directory (`su _pleroma -;cd ~/pleroma`) and run `MIX_ENV=prod mix ecto.migrate`
@@ -264,4 +256,4 @@ LC_ALL=en_US.UTF-8 MIX_ENV=prod mix pleroma.user new <username> <your@emailaddre
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
diff --git a/docs/installation/openbsd_fi.md b/docs/installation/openbsd_fi.md
index a61434147..3c40b2d1a 100644
--- a/docs/installation/openbsd_fi.md
+++ b/docs/installation/openbsd_fi.md
@@ -10,8 +10,8 @@ suositeltavaa tehdä komennon `doas` avulla, katso `doas (1)` ja `doas.conf (5)`
 Tästä eteenpäin oletuksena on, että domain "esimerkki.com" osoittaa
 serverin IP-osoitteeseen.
 
-Jos asennuksen kanssa on ongelmia, IRC-kanava #pleroma Freenodessa tai
-Matrix-kanava #freenode_#pleroma:matrix.org ovat hyviä paikkoja löytää apua
+Jos asennuksen kanssa on ongelmia, IRC-kanava #pleroma Libera.chat tai
+Matrix-kanava #pleroma:libera.chat ovat hyviä paikkoja löytää apua
 (englanniksi), `/msg eal kukkuu` jos haluat välttämättä puhua härmää.
 
 Asenna tarvittava ohjelmisto:
diff --git a/docs/installation/otp_en.md b/docs/installation/otp_en.md
index 42e264e65..3f67534ac 100644
--- a/docs/installation/otp_en.md
+++ b/docs/installation/otp_en.md
@@ -31,7 +31,7 @@ Other than things bundled in the OTP release Pleroma depends on:
 
 === "Alpine"
     ```
-    echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
+    awk 'NR==2' /etc/apk/repositories | sed 's/main/community/' | tee -a /etc/apk/repositories
     apk update
     apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot file-dev
     ```
@@ -50,7 +50,6 @@ Per [`docs/installation/optional/media_graphics_packages.md`](optional/media_gra
 
 === "Alpine"
     ```
-    echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
     apk update
     apk add imagemagick ffmpeg exiftool
     ```
@@ -232,7 +231,7 @@ At this point if you open your (sub)domain in a browser you should see a 502 err
 
 If everything worked, you should see Pleroma-FE when visiting your domain. If that didn't happen, try reviewing the installation steps, starting Pleroma in the foreground and seeing if there are any errrors.
 
-Still doesn't work? Feel free to contact us on [#pleroma on freenode](https://irc.pleroma.social) or via matrix at <https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org>, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new)
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new).
 
 ## Post installation
 
@@ -290,7 +289,7 @@ nginx -t
 
 ## Create your first user and set as admin
 ```sh
-cd /opt/pleroma/bin
+cd /opt/pleroma
 su pleroma -s $SHELL -lc "./bin/pleroma_ctl user new joeuser joeuser@sld.tld --admin"
 ```
 This will create an account withe the username of 'joeuser' with the email address of joeuser@sld.tld, and set that user's account as an admin. This will result in a link that you can paste into the browser, which logs you in and enables you to set the password.
@@ -301,4 +300,4 @@ This will create an account withe the username of 'joeuser' with the email addre
 
 ## Questions
 
-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new).