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 2023-05-18 15:44:28 +01:00 committed by GitHub
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commit 4ec40b16ac
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2 changed files with 39 additions and 15 deletions

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