From 3a7c33394328108cc9159de89367a90701fcbc80 Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Mon, 25 Oct 2021 19:52:54 +0200
Subject: [PATCH] l green.r: add brain repo

---
 lass/1systems/green/config.nix |  9 ++++++
 lass/2configs/git-brain.nix    | 57 ++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 lass/2configs/git-brain.nix

diff --git a/lass/1systems/green/config.nix b/lass/1systems/green/config.nix
index d7bf62b40..b41e396c9 100644
--- a/lass/1systems/green/config.nix
+++ b/lass/1systems/green/config.nix
@@ -17,6 +17,8 @@ with import <stockholm/lib>;
     <stockholm/lass/2configs/IM.nix>
     <stockholm/lass/2configs/muchsync.nix>
     <stockholm/lass/2configs/pass.nix>
+
+    <stockholm/lass/2configs/git-brain.nix>
   ];
 
   krebs.build.host = config.krebs.hosts.green;
@@ -68,6 +70,13 @@ with import <stockholm/lib>;
       ];
       clearTarget = true;
     };
+    "/var/lib/git" = {
+      source = "/var/state/git";
+      options = [
+        "-M ${toString config.users.users.git.uid}"
+      ];
+      clearTarget = true;
+    };
   };
 
   systemd.services."bindfs-_home_lass_Maildir".serviceConfig.ExecStartPost = pkgs.writeDash "symlink-notmuch" ''
diff --git a/lass/2configs/git-brain.nix b/lass/2configs/git-brain.nix
new file mode 100644
index 000000000..1c6f92fcd
--- /dev/null
+++ b/lass/2configs/git-brain.nix
@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+with import <stockholm/lib>;
+let
+
+  repos = krebs-repos;
+  rules = concatMap krebs-rules (attrValues krebs-repos);
+
+  krebs-repos = mapAttrs make-krebs-repo {
+    brain = { };
+    krebs-secrets = { };
+  };
+
+
+  make-krebs-repo = with git; name: { cgit ? {}, ... }: {
+    inherit cgit name;
+    public = false;
+    hooks = {
+      post-receive = pkgs.git-hooks.irc-announce {
+        nick = config.networking.hostName;
+        verbose = true;
+        channel = "#xxx";
+        # TODO remove the hardcoded hostname
+        server = "irc.r";
+      };
+    };
+  };
+
+
+
+  # TODO: get the list of all krebsministers
+  krebsminister = with config.krebs.users; [ makefu tv ];
+  krebs-rules = repo:
+    set-owners repo [ config.krebs.users.lass ] ++ set-ro-access repo krebsminister;
+
+  set-ro-access = with git; repo: user:
+      singleton {
+        inherit user;
+        repo = [ repo ];
+        perm = fetch;
+      };
+
+  set-owners = with git;repo: user:
+      singleton {
+        inherit user;
+        repo = [ repo ];
+        perm = push "refs/*" [ non-fast-forward create delete merge ];
+      };
+
+in {
+  krebs.git = {
+    enable = true;
+    cgit = {
+      enable = false;
+    };
+    inherit repos rules;
+  };
+}