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flake.nix: start synapse automatically, add space usage warning (#15613)
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
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axel simon
GitHub
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2 changed files with 39 additions and 15 deletions
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changelog.d/15613.doc
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changelog.d/15613.doc
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Warn users that at least 3.75GB of space is needed for the nix Synapse development environment.
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53
flake.nix
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flake.nix
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# A nix flake that sets up a complete Synapse development environment. Dependencies
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# A Nix flake that sets up a complete Synapse development environment. Dependencies
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# for the SyTest (https://github.com/matrix-org/sytest) and Complement
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# (https://github.com/matrix-org/complement) Matrix homeserver test suites are also
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# installed automatically.
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#
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# You must have already installed nix (https://nixos.org) on your system to use this.
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# nix can be installed on Linux or MacOS; NixOS is not required. Windows is not
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# directly supported, but nix can be installed inside of WSL2 or even Docker
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# You must have already installed Nix (https://nixos.org) on your system to use this.
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# Nix can be installed on Linux or MacOS; NixOS is not required. Windows is not
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# directly supported, but Nix can be installed inside of WSL2 or even Docker
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# containers. Please refer to https://nixos.org/download for details.
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#
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# You must also enable support for flakes in Nix. See the following for how to
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# do so permanently: https://nixos.wiki/wiki/Flakes#Enable_flakes
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#
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# Be warned: you'll need over 3.75 GB of free space to download all the dependencies.
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#
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# Usage:
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#
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# With nix installed, navigate to the directory containing this flake and run
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# With Nix installed, navigate to the directory containing this flake and run
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# `nix develop --impure`. The `--impure` is necessary in order to store state
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# locally from "services", such as PostgreSQL and Redis.
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#
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# You should now be dropped into a new shell with all programs and dependencies
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# availabile to you!
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#
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# You can start up pre-configured, local PostgreSQL and Redis instances by
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# You can start up pre-configured local Synapse, PostgreSQL and Redis instances by
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# running: `devenv up`. To stop them, use Ctrl-C.
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#
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# A PostgreSQL database called 'synapse' will be set up for you, along with
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# a PostgreSQL user named 'synapse_user'.
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# The 'host' can be found by running `echo $PGHOST` with the development
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# shell activated. Use these values to configure your Synapse to connect
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# to the local PostgreSQL database. You do not need to specify a password.
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# https://matrix-org.github.io/synapse/latest/postgres
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#
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# All state (the venv, postgres and redis data and config) are stored in
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# .devenv/state. Deleting a file from here and then re-entering the shell
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# will recreate these files from scratch.
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@ -66,7 +61,7 @@
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let
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pkgs = nixpkgs.legacyPackages.${system};
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in {
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# Everything is configured via devenv - a nix module for creating declarative
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# Everything is configured via devenv - a Nix module for creating declarative
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# developer environments. See https://devenv.sh/reference/options/ for a list
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# of all possible options.
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default = devenv.lib.mkShell {
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@ -153,11 +148,39 @@
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# Redis is needed in order to run Synapse in worker mode.
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services.redis.enable = true;
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# Configure and start Synapse. Before starting Synapse, this shell code:
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# * generates a default homeserver.yaml config file if one does not exist, and
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# * ensures a directory containing two additional homeserver config files exists;
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# one to configure using the development environment's PostgreSQL as the
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# database backend and another for enabling Redis support.
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process.before = ''
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python -m synapse.app.homeserver -c homeserver.yaml --generate-config --server-name=synapse.dev --report-stats=no
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mkdir -p homeserver-config-overrides.d
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cat > homeserver-config-overrides.d/database.yaml << EOF
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## Do not edit this file. This file is generated by flake.nix
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database:
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name: psycopg2
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args:
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user: synapse_user
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database: synapse
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host: $PGHOST
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cp_min: 5
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cp_max: 10
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EOF
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cat > homeserver-config-overrides.d/redis.yaml << EOF
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## Do not edit this file. This file is generated by flake.nix
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redis:
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enabled: true
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EOF
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'';
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# Start synapse when `devenv up` is run.
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processes.synapse.exec = "poetry run python -m synapse.app.homeserver -c homeserver.yaml --config-directory homeserver-config-overrides.d";
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# Define the perl modules we require to run SyTest.
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#
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# This list was compiled by cross-referencing https://metacpan.org/
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# with the modules defined in './cpanfile' and then finding the
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# corresponding nix packages on https://search.nixos.org/packages.
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# corresponding Nix packages on https://search.nixos.org/packages.
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#
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# This was done until `./install-deps.pl --dryrun` produced no output.
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env.PERL5LIB = "${with pkgs.perl536Packages; makePerlPath [
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