add dev workflow

Author: Mic92

.gitignore

@@ -1,6 +1,8 @@
 result
 result-*
 
+.buildbot-dev
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

packages/buildbot-dev.nix

@@ -0,0 +1,36 @@
+{
+  writeShellScriptBin,
+  python,
+  buildbot,
+  buildbot-worker,
+  buildbot-nix,
+  buildbot-gitea,
+  buildbot-effects,
+  buildbot-plugins,
+}:
+let
+  pythonEnv = python.withPackages (ps: [
+    ps.twisted
+    (ps.toPythonModule buildbot)
+    (ps.toPythonModule buildbot-worker)
+    buildbot-nix
+    buildbot-gitea
+    buildbot-effects
+    buildbot-plugins.www
+  ]);
+in
+writeShellScriptBin "buildbot-dev" ''
+  set -xeuo pipefail
+  git_root=$(git rev-parse --show-toplevel)
+  mkdir -p "$git_root/.buildbot-dev"
+  cd "$git_root/.buildbot-dev"
+  "${pythonEnv}/bin/buildbot" create-master .
+  #if [ ! -f master.cfg ]; then
+  install -m600 ${./master.cfg.py} master.cfg
+  #fi
+  echo > $git_root/.buildbot-dev/twistd.log
+  tail -f $git_root/.buildbot-dev/twistd.log &
+  tail_pid=$!
+  trap 'kill $tail_pid' EXIT
+  "${pythonEnv}/bin/buildbot" start --nodaemon .
+''

packages/flake-module.nix

@@ -3,13 +3,23 @@
     {
       lib,
       pkgs,
+      self',
       ...
     }:
     {
       packages =
         {
           # useful for checking what buildbot version is used.
           buildbot = pkgs.callPackage ./buildbot.nix { };
+          buildbot-dev = pkgs.python3.pkgs.callPackage ./buildbot-dev.nix {
+            inherit (self'.packages)
+              buildbot-gitea
+              buildbot-effects
+              buildbot-nix
+              buildbot
+              ;
+            inherit (pkgs) buildbot-worker buildbot-plugins;
+          };
           buildbot-nix = pkgs.python3.pkgs.callPackage ./buildbot-nix.nix { };
           buildbot-gitea = pkgs.python3.pkgs.callPackage ./buildbot-gitea.nix {
             buildbot = pkgs.buildbot;

packages/master.cfg.py

@@ -0,0 +1,42 @@
+from pathlib import Path
+from buildbot_nix import (
+    NixConfigurator,
+    BuildbotNixConfig,
+)
+from buildbot.process.factory import BuildFactory
+
+factory = BuildFactory()
+
+STATE_DIR = Path(".")
+PORT = 8012
+
+buildbot_nix_config = BuildbotNixConfig(
+    db_url="sqlite:///state.sqlite",
+    pull_based=dict(
+        repositories={
+            "buildbot-nix": dict(
+                name="buildbot-nix",
+                url="https://github.com/nix-community/buildbot-nix",
+                default_branch="main",
+            )
+        },
+        poll_spread=None,
+    ),
+    build_systems=["x86_64-linux"],
+    eval_max_memory_size=4096,
+    eval_worker_count=4,
+    local_workers=4,
+    domain="localhost",
+    webhook_base_url=f"http://localhost:{PORT}",
+    url=f"http://localhost:{PORT}",
+)
+
+c = BuildmasterConfig = dict(
+    title="Hello World CI",
+    titleURL="https://buildbot.github.io/hello-world/",
+    configurators=[
+        NixConfigurator(buildbot_nix_config),
+    ],
+    protocols={"pb": {"port": "tcp:9989:interface=\\:\\:1"}},
+    www=dict(port=PORT, plugins=dict()),
+)