tv nixpkgs-overlays: init

This module allows to have per-system nixpkgs-overlays and is required
because at the moment of committing, only xu has an up-to-date stockholm
development directory in /home/tv/stockholm.

2 files changed, 24 insertions, 0 deletions

diff --git a/tv/3modules/default.nix b/tv/3modules/default.nix
index 83dc212a6..57ffbfab8 100644
--- a/tv/3modules/default.nix
+++ b/tv/3modules/default.nix
@@ -6,6 +6,7 @@ _:
     ./ejabberd
     ./hosts.nix
     ./iptables.nix
+    ./nixpkgs-overlays.nix
     ./x0vncserver.nix
   ];
 }
diff --git a/tv/3modules/nixpkgs-overlays.nix b/tv/3modules/nixpkgs-overlays.nix
new file mode 100644
index 000000000..4eb7a86bd
--- /dev/null
+++ b/tv/3modules/nixpkgs-overlays.nix
@@ -0,0 +1,23 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }: {
+
+  options.tv.nixpkgs-overlays = mkOption {
+    apply = src:
+      pkgs.runCommand "nixpkgs-overlays" {} ''
+        mkdir $out
+        ${concatStringsSep "\n" (mapAttrsToList (name: path:
+          "ln -s ${shell.escape path} $out/${shell.escape name}"
+        ) src)}
+      '' // {
+        inherit src;
+      };
+    type = types.attrsOf types.absolute-pathname;
+  };
+
+  config = {
+    tv.nixpkgs-overlays = {
+      krebs = mkDefault "/var/src/stockholm/krebs/5pkgs";
+      tv = mkDefault "/var/src/stockholm/tv/5pkgs";
+    };
+  };
+}