5pkgs: fix nix flake show compatibility

Integrate nix-writers flake for extended writer functions (writeJq,
writeGawkBin, etc.) using a fixpoint overlay so functions can reference
each other.

Update Python packages to new buildPythonPackage format:
- Add pyproject = true and build-system for ovh-zone, python-dnsstamps,
  ssh-audit, tinc_graphs

Fix writer function usage by taking them as arguments instead of
accessing via pkgs:
- nixos-format-error, untilport, qrscan, logf, gitignore, urix, etc.

Update deprecated nixpkgs attribute names:
- gdk_pixbuf -> gdk-pixbuf
- libSM/libX11/libXinerama -> xorg.*
- buildGo120Module -> buildGoModule

Remove obsolete/broken packages:
- buildbot-classic-slave (missing buildbot-classic)
- cac-panel, drivedroid-gen-repo (Python 2 / format issues)
- games-user-env, generate-secrets (unused)
- internetarchive, bepasty-client-cli, krebspaste (Python 2)
- qrscan (conflicts with removed nixpkgs package)

Other fixes:
- Use lib.callPackageWith for package interdependencies
- Only export derivations in flake packages output
- Limit packages output to Linux systems
- Fix IFD in ukrepl by passing path to writer instead of readFile
- Import stockholm.lib directly where needed (bling)
- Rewrite brain and git-hooks to use runCommand

1 files changed, 16 insertions, 7 deletions

diff --git a/flake.nix b/flake.nix
index 0b8d875c7..c3a218dcf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,10 +1,7 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    nix-writers = {
-      url = "git+https://cgit.krebsco.de/nix-writers";
-      flake = false;
-    };
+    nix-writers.url = "git+https://cgit.krebsco.de/nix-writers";
     # disko.url = "github:nix-community/disko";
     # disko.inputs.nixpkgs.follows = "nixpkgs";
     buildbot-nix.url = "github:Mic92/buildbot-nix";
@@ -43,9 +40,21 @@
     };
     overlays.default = import ./krebs/5pkgs/default.nix;
     packages = let
-      packageNames = self.lib.attrNames (self.lib.mapNixDir (x: null) ./krebs/5pkgs/simple);
-      appliedOverlay = (system: self.overlays.default {} (self.inputs.nixpkgs.legacyPackages.${system} // { lib = self.lib; }));
-    in nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ] (system: self.lib.getAttrs packageNames (appliedOverlay system));
+      allNames = self.lib.attrNames (self.lib.mapNixDir (x: null) ./krebs/5pkgs/simple);
+      appliedOverlay = (system:
+        let
+          base = self.inputs.nixpkgs.legacyPackages.${system};
+          # Apply nix-writers overlay with fixpoint so its functions can find each other
+          withWriters = nixpkgs.lib.fix (final: base // nix-writers.overlays.default final base);
+        in self.overlays.default {} (withWriters // { lib = self.lib; }));
+      # Only include derivations in packages output
+      getDerivations = overlay: builtins.listToAttrs (builtins.filter (x: x != null) (map (name:
+        let val = overlay.${name} or null;
+        in if val != null && (val.type or null) == "derivation"
+           then { inherit name; value = val; }
+           else null
+      ) allNames));
+    in nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" ] (system: getDerivations (appliedOverlay system));
     lib = import (self.outPath + "/lib/pure.nix") { lib = nixpkgs.lib; };
   };
 }