From 30fc52dfe91df10222e6205b0c0dc6dfb1a563bd Mon Sep 17 00:00:00 2001
From: td <j.nirve@famedly.com>
Date: Wed, 3 Jun 2026 15:48:46 +0100
Subject: [PATCH 1/3] chore: dart workflows

---
 nix/dart/default.nix          | 35 ++++++++++++++++++++++++++
 nix/dart/devshell.nix         | 46 ++++++++++++++++++++++++++++++++++
 nix/dart/pre-commit-hooks.nix | 43 ++++++++++++++++++++++++++++++++
 nix/dart/workflow.nix         | 47 +++++++++++++++++++++++++++++++++++
 4 files changed, 171 insertions(+)
 create mode 100644 nix/dart/default.nix
 create mode 100644 nix/dart/devshell.nix
 create mode 100644 nix/dart/pre-commit-hooks.nix
 create mode 100644 nix/dart/workflow.nix

diff --git a/nix/dart/default.nix b/nix/dart/default.nix
new file mode 100644
index 0000000..caf96cc
--- /dev/null
+++ b/nix/dart/default.nix
@@ -0,0 +1,35 @@
+{
+  flake-parts-lib,
+  lib,
+  importApply,
+  ...
+}@args:
+importingFlake: {
+  imports = [
+    (importApply ./devshell.nix args)
+    (importApply ./pre-commit-hooks.nix args)
+
+    ./workflow.nix
+  ];
+
+  options.perSystem = flake-parts-lib.mkPerSystemOption ({
+    options.famedly.standards.dart.projects = lib.mkOption {
+      description = ''
+        Dart projects in the repository that should be equipped with our
+        standards.
+
+        This must be a relative path starting with `.`. Simply use `.` if the
+        whole project is a Dart project.
+      '';
+      default = { };
+
+      example = ''
+        {
+          "." = { };
+        }
+      '';
+
+      type = lib.types.attrsOf (lib.types.submodule { });
+    };
+  });
+}
diff --git a/nix/dart/devshell.nix b/nix/dart/devshell.nix
new file mode 100644
index 0000000..4bb226a
--- /dev/null
+++ b/nix/dart/devshell.nix
@@ -0,0 +1,46 @@
+{ inputs, ... }:
+importingFlake: {
+  perSystem =
+    {
+      config,
+      lib,
+      self',
+      pkgs,
+      system,
+      ...
+    }:
+    lib.mkMerge [
+      {
+        devshells.dart = {
+          packages =
+            (lib.attrValues {
+              inherit (pkgs)
+                dart
+                ;
+            })
+
+            # TODO: Find a nice way to inherit all settings from the
+            # general devshell, not just package.
+            ++ config.devshells.general.packages;
+        };
+
+        # Install .envrc files that set up the correct devenv into all
+        # Dart projects.
+        filegen.settings.files = lib.mapAttrsToList (project: _: {
+          type = "copy";
+          target = "${project}/.envrc";
+          source = pkgs.writeText ".envrc" ''
+            use flake .#dart
+          '';
+          clobber = true;
+        }) config.famedly.standards.dart.projects;
+      }
+
+      (lib.mkIf (lib.hasSuffix "linux" system) {
+        devshells.dart.packages = lib.attrValues {
+          inherit (pkgs)
+            ;
+        };
+      })
+    ];
+}
diff --git a/nix/dart/pre-commit-hooks.nix b/nix/dart/pre-commit-hooks.nix
new file mode 100644
index 0000000..f9d4cd7
--- /dev/null
+++ b/nix/dart/pre-commit-hooks.nix
@@ -0,0 +1,43 @@
+{
+  flakeModules,
+  inputs,
+  flake-parts-lib,
+  lib,
+  ...
+}:
+importingFlake: {
+  config.perSystem =
+    {
+      self',
+      pkgs,
+      config,
+      ...
+    }:
+    let
+      dart = lib.getExe' self'.packages.famedly-dart-toolchain "dart";
+    in
+    {
+      prek-pre-commit.workspaces = lib.mapAttrs (name: _: {
+        default_language_version.dart = "system";
+
+        repos = [
+          {
+            repo = "local";
+            hooks = [
+              {
+                id = "dart-analyze";
+                name = "dart-analyze";
+                description = "Run dart analyze on all targets";
+
+                entry = "${dart} analyze --fatal-infos --fatal-warnings --fatal-lints";
+
+                language = "system";
+                types = [ "dart" ];
+                pass_filenames = false;
+              }
+            ];
+          }
+        ];
+      }) config.famedly.standards.dart.projects;
+    };
+}
diff --git a/nix/dart/workflow.nix b/nix/dart/workflow.nix
new file mode 100644
index 0000000..46762e1
--- /dev/null
+++ b/nix/dart/workflow.nix
@@ -0,0 +1,47 @@
+{ config, ... }:
+let
+  allowed-actions = config.famedly.standards.allowed-action-versions;
+in
+{
+  perSystem =
+    { ... }:
+    {
+      githubActions.workflows.dart-test = {
+        name = "Dart test workflow";
+
+        on = {
+          push = {
+            branches = [ "main" ];
+            tags = [ "*" ];
+          };
+
+          pullRequest = {
+            branches = [ "*" ];
+            types = [
+              "opened"
+              "reopened"
+              "synchronize"
+              "ready_for_review"
+            ];
+          };
+        };
+
+        concurrency = {
+          group = "\${{ github.workflow }}-\${{ github.ref }}";
+          cancelInProgress = true;
+        };
+
+        defaults.run.shell = "nu --no-config-file --no-history {0}";
+        env.DART_TERM_COLOR = "always";
+
+        jobs.test = {
+          runsOn = "ubuntu-latest-4core";
+
+          steps = [
+            { uses = allowed-actions."actions/checkout".uses; }
+            { uses = allowed-actions."cachix/install-nix-action".uses; }
+          ];
+        };
+      };
+    };
+}

From 8f1e46a84da951284198cbbadd837ae1bd6c57ee Mon Sep 17 00:00:00 2001
From: td <j.nirve@famedly.com>
Date: Wed, 3 Jun 2026 15:55:15 +0100
Subject: [PATCH 2/3] chore: cleanup

---
 nix/dart/default.nix                  |  1 -
 nix/dart/devshell.nix                 | 46 ---------------------------
 nix/dart/workflows/default.nix        | 34 ++++++++++++++++++++
 nix/dart/{ => workflows}/workflow.nix |  0
 4 files changed, 34 insertions(+), 47 deletions(-)
 delete mode 100644 nix/dart/devshell.nix
 create mode 100644 nix/dart/workflows/default.nix
 rename nix/dart/{ => workflows}/workflow.nix (100%)

diff --git a/nix/dart/default.nix b/nix/dart/default.nix
index caf96cc..af7310a 100644
--- a/nix/dart/default.nix
+++ b/nix/dart/default.nix
@@ -6,7 +6,6 @@
 }@args:
 importingFlake: {
   imports = [
-    (importApply ./devshell.nix args)
     (importApply ./pre-commit-hooks.nix args)
 
     ./workflow.nix
diff --git a/nix/dart/devshell.nix b/nix/dart/devshell.nix
deleted file mode 100644
index 4bb226a..0000000
--- a/nix/dart/devshell.nix
+++ /dev/null
@@ -1,46 +0,0 @@
-{ inputs, ... }:
-importingFlake: {
-  perSystem =
-    {
-      config,
-      lib,
-      self',
-      pkgs,
-      system,
-      ...
-    }:
-    lib.mkMerge [
-      {
-        devshells.dart = {
-          packages =
-            (lib.attrValues {
-              inherit (pkgs)
-                dart
-                ;
-            })
-
-            # TODO: Find a nice way to inherit all settings from the
-            # general devshell, not just package.
-            ++ config.devshells.general.packages;
-        };
-
-        # Install .envrc files that set up the correct devenv into all
-        # Dart projects.
-        filegen.settings.files = lib.mapAttrsToList (project: _: {
-          type = "copy";
-          target = "${project}/.envrc";
-          source = pkgs.writeText ".envrc" ''
-            use flake .#dart
-          '';
-          clobber = true;
-        }) config.famedly.standards.dart.projects;
-      }
-
-      (lib.mkIf (lib.hasSuffix "linux" system) {
-        devshells.dart.packages = lib.attrValues {
-          inherit (pkgs)
-            ;
-        };
-      })
-    ];
-}
diff --git a/nix/dart/workflows/default.nix b/nix/dart/workflows/default.nix
new file mode 100644
index 0000000..af7310a
--- /dev/null
+++ b/nix/dart/workflows/default.nix
@@ -0,0 +1,34 @@
+{
+  flake-parts-lib,
+  lib,
+  importApply,
+  ...
+}@args:
+importingFlake: {
+  imports = [
+    (importApply ./pre-commit-hooks.nix args)
+
+    ./workflow.nix
+  ];
+
+  options.perSystem = flake-parts-lib.mkPerSystemOption ({
+    options.famedly.standards.dart.projects = lib.mkOption {
+      description = ''
+        Dart projects in the repository that should be equipped with our
+        standards.
+
+        This must be a relative path starting with `.`. Simply use `.` if the
+        whole project is a Dart project.
+      '';
+      default = { };
+
+      example = ''
+        {
+          "." = { };
+        }
+      '';
+
+      type = lib.types.attrsOf (lib.types.submodule { });
+    };
+  });
+}
diff --git a/nix/dart/workflow.nix b/nix/dart/workflows/workflow.nix
similarity index 100%
rename from nix/dart/workflow.nix
rename to nix/dart/workflows/workflow.nix

From 4d88daaebf97ba6ad485878da757d5a6ed89d84a Mon Sep 17 00:00:00 2001
From: td <j.nirve@famedly.com>
Date: Wed, 3 Jun 2026 16:19:03 +0100
Subject: [PATCH 3/3] chore: hm this is going to break everything, do not
 merge, we need to move actions to running inside nix, this right now just
 generates the github workflow

---
 .config/filegen-manifest.json   | 14 +++++++---
 nix/dart/default.nix            |  2 +-
 nix/dart/pre-commit-hooks.nix   | 47 ++++++++++++++++++++++++++++++---
 nix/dart/workflows/workflow.nix | 15 ++++++++---
 nix/default.nix                 |  1 +
 5 files changed, 69 insertions(+), 10 deletions(-)

diff --git a/.config/filegen-manifest.json b/.config/filegen-manifest.json
index 4a6d1dd..6245d9d 100644
--- a/.config/filegen-manifest.json
+++ b/.config/filegen-manifest.json
@@ -5,7 +5,7 @@
       "clobber": true,
       "deactivate": null,
       "ignore-modification": null,
-      "source": "/nix/store/7lmqw9hjcp0wrrcr1fn8vgyjcpsiryns-pre-commit-config.yaml",
+      "source": "/nix/store/yhbigqfbyr91f9si3b6y6ib5558ddzx3-pre-commit-config.yaml",
       "target": "./.pre-commit-config.yaml",
       "type": "copy"
     },
@@ -13,7 +13,15 @@
       "clobber": true,
       "deactivate": null,
       "ignore-modification": null,
-      "source": "/nix/store/lai6c0kl9c0r0j1ld4j8ilrw53k3bxmq-rust-test.yml",
+      "source": "/nix/store/1i9xz4fis8a12qlv03ss9smrhhv8nicn-dart-test.yml",
+      "target": "./.github/workflows/dart-test.yml",
+      "type": "copy"
+    },
+    {
+      "clobber": true,
+      "deactivate": null,
+      "ignore-modification": null,
+      "source": "/nix/store/59cxdgpnmw5y43fhn7q2bcvz0jv5v9b3-rust-test.yml",
       "target": "./.github/workflows/rust-test.yml",
       "type": "copy"
     },
@@ -21,7 +29,7 @@
       "clobber": true,
       "deactivate": null,
       "ignore-modification": null,
-      "source": "/nix/store/glxwjx24212kdvwwwpzcqkhdzck96cvi-envrc",
+      "source": "/nix/store/qxl4d2ablir1lzshp9manp44nkl0328x-envrc",
       "target": "./.envrc",
       "type": "copy"
     }
diff --git a/nix/dart/default.nix b/nix/dart/default.nix
index af7310a..5cbecca 100644
--- a/nix/dart/default.nix
+++ b/nix/dart/default.nix
@@ -8,7 +8,7 @@ importingFlake: {
   imports = [
     (importApply ./pre-commit-hooks.nix args)
 
-    ./workflow.nix
+    ./workflows/workflow.nix
   ];
 
   options.perSystem = flake-parts-lib.mkPerSystemOption ({
diff --git a/nix/dart/pre-commit-hooks.nix b/nix/dart/pre-commit-hooks.nix
index f9d4cd7..1378bdd 100644
--- a/nix/dart/pre-commit-hooks.nix
+++ b/nix/dart/pre-commit-hooks.nix
@@ -8,13 +8,43 @@
 importingFlake: {
   config.perSystem =
     {
-      self',
       pkgs,
       config,
       ...
     }:
     let
-      dart = lib.getExe' self'.packages.famedly-dart-toolchain "dart";
+      dart = lib.getExe pkgs.dart;
+      grep = lib.getExe pkgs.gnugrep;
+
+      check-conventional-commits = pkgs.writeShellScript "check-conventional-commits" ''
+        set -eu
+
+        commit_message_file="$1"
+        accepted_prefixes='ci|fix|feat|chore|test|perf|refactor|style|builds|docs|revert'
+
+        if ! ${grep} -Eq "^($accepted_prefixes)(\([[:alnum:]_.-]+\))?!?: .+" "$commit_message_file"; then
+          echo "Commit message must start with one of: $accepted_prefixes"
+          exit 1
+        fi
+      '';
+
+      dart-analyze = pkgs.writeShellScript "dart-analyze" ''
+        set -eu
+
+        if [ -f pubspec.yaml ] && ${grep} -Eq '^flutter:' pubspec.yaml; then
+          command=flutter
+        else
+          command=${dart}
+        fi
+
+        ${dart} format lib/ --set-exit-if-changed
+        "$command" pub get
+        "$command" analyze
+
+        if command -v dart_code_metrics >/dev/null 2>&1; then
+          dart_code_metrics analyze lib || true
+        fi
+      '';
     in
     {
       prek-pre-commit.workspaces = lib.mapAttrs (name: _: {
@@ -24,12 +54,23 @@ importingFlake: {
           {
             repo = "local";
             hooks = [
+              {
+                id = "check-conventional-commits";
+                name = "check-conventional-commits";
+                description = "Check commit messages follow conventional commits";
+
+                entry = "${check-conventional-commits}";
+
+                language = "system";
+                stages = [ "commit-msg" ];
+              }
+
               {
                 id = "dart-analyze";
                 name = "dart-analyze";
                 description = "Run dart analyze on all targets";
 
-                entry = "${dart} analyze --fatal-infos --fatal-warnings --fatal-lints";
+                entry = "${dart-analyze}";
 
                 language = "system";
                 types = [ "dart" ];
diff --git a/nix/dart/workflows/workflow.nix b/nix/dart/workflows/workflow.nix
index 46762e1..f389cb0 100644
--- a/nix/dart/workflows/workflow.nix
+++ b/nix/dart/workflows/workflow.nix
@@ -1,10 +1,19 @@
-{ config, ... }:
+{ config, lib, ... }:
 let
   allowed-actions = config.famedly.standards.allowed-action-versions;
 in
 {
   perSystem =
-    { ... }:
+    { config, ... }:
+    let
+      run-pre-commit = project: ''
+        nix develop .#general --command sh -c ${lib.escapeShellArg "cd ${lib.escapeShellArg project} && prek run --all-files"}
+      '';
+      dart-project-steps = lib.mapAttrsToList (project: _: {
+        name = "Run Dart pre-commit checks (${project})";
+        run = run-pre-commit project;
+      }) config.famedly.standards.dart.projects;
+    in
     {
       githubActions.workflows.dart-test = {
         name = "Dart test workflow";
@@ -40,7 +49,7 @@ in
           steps = [
             { uses = allowed-actions."actions/checkout".uses; }
             { uses = allowed-actions."cachix/install-nix-action".uses; }
-          ];
+          ] ++ dart-project-steps;
         };
       };
     };
diff --git a/nix/default.nix b/nix/default.nix
index 502066c..ed7b994 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -11,6 +11,7 @@ importingFlake: {
     flakeModules.prek-pre-commit
 
     (importApply ./general args)
+    (importApply ./dart args)
     (importApply ./rust args)
   ];
 }