Add support for devenv developer environments

.gitignore

@@ -72,3 +72,8 @@ book/
 
 # Don't include users' poetry configs
 /poetry.toml
+
+# Devenv
+.devenv*
+devenv.local.nix
+

devenv.lock

@@ -0,0 +1,177 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1673960114,
+        "narHash": "sha256-YNCok1a8cy71nP0idJds2Dwn2B1T6zGw9+2H1A0lNa0=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "0960585a7221e6ede718cc9a2c2eade7ce75c229",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1674023045,
+        "narHash": "sha256-btQC+gTeVLmX9cYl/6Kig7BuDltVWJEh7TrITAc6QjA=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "75dbe699bc57323cdef636b82bcfef6028bd1530",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1668681692,
+        "narHash": "sha256-Ht91NGdewz8IQLtWZ9LCeNXMSXHUss+9COoqu6JLmXU=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "009399224d5e398d03b22badca40a37ac85412a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1660459072,
+        "narHash": "sha256-8DFJjXG8zqoONA1vXtgeKXy68KdJL5UaXR8NtVMUbx8=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1673947312,
+        "narHash": "sha256-xx/2nRwRy3bXrtry6TtydKpJpqHahjuDB5sFkQ/XNDE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2d38b664b4400335086a713a0036aafaa002c003",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1671271954,
+        "narHash": "sha256-cSvu+bnvN08sOlTBWbBrKaBHQZq8mvk8bgpt0ZJ2Snc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d513b448cc2a6da2c8803e3c197c9fc7e67b19e3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-22.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1674046351,
+        "narHash": "sha256-vNErPj4gfO/G1vHuOh5/IbjLaydwePcRlD0fXlnUbmI=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "756cc26afb75b0f8bfec48bbc54a8836a04953fb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "fenix": "fenix",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": "pre-commit-hooks"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673979364,
+        "narHash": "sha256-ecgQENol9XhhcYF+M9B8FMrsWYQ/ZvRsvgEWi8HI6D0=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "3a7271336536f2cd558498755254ae8c0e73baa7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

devenv.nix

@@ -0,0 +1,122 @@
+{ inputs, pkgs, ... }:
+
+{
+  # Configure packages to install.
+  # Search for package names at https://search.nixos.org/packages?channel=unstable
+  packages = with pkgs; [
+    # Native dependencies for running Synapse.
+    icu
+    libffi
+    libjpeg
+    libpqxx
+    libwebp
+    libxml2
+    libxslt
+    sqlite
+
+    # Native dependencies for unit tests (SyTest also requires OpenSSL).
+    openssl
+
+    # Native dependencies for running Complement.
+    olm
+
+    # Development tools.
+    poetry
+  ];
+
+  # Activate (and create if necessary) a poetry virtualenv on startup.
+  enterShell = ''
+    . "$(dirname $(poetry run which python))/activate"
+  '';
+
+  # Install dependencies for the additional programming languages
+  # involved with Synapse development. Python is already available
+  # from poetry's virtual environment.
+  #
+  # * Rust is used for developing and running Synapse.
+  # * Golang is needed to run the Complement test suite.
+  # * Perl is needed to run the SyTest test suite.
+  languages.go.enable = true;
+  languages.rust.enable = true;
+  languages.rust.version = "latest";
+  languages.perl.enable = true;
+
+  # Postgres is needed to run Synapse with postgres support and
+  # to run certain unit tests that require postgres.
+  services.postgres.enable = true;
+
+  # On the first invocation of `devenv up`, create a database for
+  # Syanpse to store data in.
+  services.postgres.initdbArgs = ["--locale=C" "--encoding=UTF8"];
+  services.postgres.initialDatabases = [
+    { name = "synapse"; }
+  ];
+
+  # Redis is needed in order to run Synapse in worker mode.
+  services.redis.enable = true;
+
+  # We wrap `poetry` with a bash script that disables the download
+  # of binary wheels for certain packages if the user is running
+  # NixOS. NixOS is special in that you can have multiple versions
+  # of packages installed at once, including your libc linker!
+  #
+  # Some binaries built for Linux expect those to be in a certain
+  # filepath, but that is not the case on NixOS. In that case, we
+  # force compiling those binaries locally instead.
+  scripts.poetry.exec = ''
+  if [ -z "$__NIXOS_SET_ENVIRONMENT_DONE" ]; then
+    # We are running on NixOS.
+    #
+    # Prevent poetry from downloading known problematic,
+    # dynamically-linked binaries for python dependencies.
+    POETRY_INSTALLER_NO_BINARY=ruff ${pkgs.poetry}/bin/poetry $@
+  else
+    ${pkgs.poetry}/bin/poetry $@
+  fi
+  '';
+
+  # Define the perl modules we require to run SyTest.
+  #
+  # This list was compiled by cross-referencing https://metacpan.org/
+  # with the modules defined in './cpanfile' and then finding the
+  # corresponding nix packages on https://search.nixos.org/packages.
+  #
+  # This was done until `./install-deps.pl --dryrun` produced no output.
+  env.PERL5LIB = "${with pkgs.perl536Packages; makePerlPath [
+    DBI
+    ClassMethodModifiers
+    CryptEd25519
+    DataDump
+    DBDPg
+    DigestHMAC
+    DigestSHA1
+    EmailAddressXS
+    EmailMIME
+    EmailSimple  # required by Email::Mime
+    EmailMessageID  # required by Email::Mime
+    EmailMIMEContentType  # required by Email::Mime
+    TextUnidecode  # required by Email::Mime
+    ModuleRuntime  # required by Email::Mime
+    EmailMIMEEncodings  # required by Email::Mime
+    FilePath
+    FileSlurper
+    Future
+    GetoptLong
+    HTTPMessage
+    IOAsync
+    IOAsyncSSL
+    IOSocketSSL
+    NetSSLeay
+    JSON
+    ListUtilsBy
+    ScalarListUtils
+    ModulePluggable
+    NetAsyncHTTP
+    MetricsAny  # required by Net::Async::HTTP
+    NetAsyncHTTPServer
+    StructDumb
+    URI
+    YAMLLibYAML
+  ]}";
+
+}

devenv.yaml

@@ -0,0 +1,8 @@
+inputs:
+  nixpkgs:
+    url: github:NixOS/nixpkgs/nixpkgs-unstable
+  fenix:
+    url: github:nix-community/fenix
+    inputs:
+      nixpkgs:
+        follows: nixpkgs