test change Colmena

flake.nix

@@ -48,13 +48,27 @@
       config.allowUnfree = true;
     };
 
+    # Colmena's latest stable version is
+    # unusable so get latest unstable version.
+    #pkgsColmena = import (builtins.fetchGit {
+    #  name = "nixpkgs-unstable-colmena";
+    #  url = "https://github.com/NixOS/nixpkgs/";
+    #  ref = "refs/heads/nixpkgs-unstable";
+    #  rev = "21808d22b1cda1898b71cf1a1beb524a97add2c4";
+    #}) {};
+    pkgsColmena = import (builtins.fetchTarball {
+      url = "https://github.com/NixOS/nixpkgs/archive/21808d22b1cda1898b71cf1a1beb524a97add2c4.tar.gz";
+      sha256 = "0v2z6jphhbk1ik7fqhlfnihcyff5np9wb3pv19j9qb9mpildx0cg";
+    }) {inherit system;};
+
+    # TODO: come back to this its really cool
     # this is just something I'm experimenting with
     PROJECT_ROOT = builtins.toString ./.;
   in {
-    # shell for `nix develop`
-    devShells."x86_64-linux".default = pkgs.mkShell {
-      buildInputs = with pkgs; [
-        colmena
+    # `nix develop` shell
+    devShells."x86_64-linux".default = pkgsColmena.mkShell {
+      buildInputs = [
+        pkgsColmena.colmena
       ];
     };