initial commit

overlays/default.nix

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+{ inputs, ... }:
+
+{
+  # synix packages accessible through 'pkgs.synix'
+  synix-packages = final: prev: { synix = inputs.synix.overlays.additions final prev; };
+
+  # packages in `pkgs/` accessible through 'pkgs.local'
+  local-packages = final: prev: { local = import ../pkgs { pkgs = final; }; };
+
+  # https://nixos.wiki/wiki/Overlays
+  modifications =
+    final: prev:
+    let
+      files = [
+        # ./instaloader.nix
+        # ./zathura.nix # FIXME: How to use overrideScope?
+      ];
+      imports = builtins.map (f: import f final prev) files;
+    in
+    builtins.foldl' (a: b: a // b) { } imports // inputs.synix.overlays.modifications final prev;
+
+  # unstable nixpkgs accessible through 'pkgs.unstable'
+  unstable-packages = final: prev: {
+    unstable = import inputs.nixpkgs-unstable {
+      inherit (final) system;
+      inherit (prev) config;
+    };
+  };
+
+  # old-stable nixpkgs accessible through 'pkgs.old-stable'
+  old-stable-packages = final: prev: {
+    old-stable = import inputs.nixpkgs-old-stable {
+      inherit (final) system;
+      inherit (prev) config;
+    };
+  };
+
+  # old-old-stable nixpkgs accessible through 'pkgs.old-old-stable'
+  old-old-stable-packages = final: prev: {
+    old-old-stable = import inputs.nixpkgs-old-old-stable {
+      inherit (final) system;
+      inherit (prev) config;
+    };
+  };
+}

overlays/instaloader.nix

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+final: prev:
+
+{
+  instaloader = prev.instaloader.overrideAttrs (oldAttrs: {
+    src = prev.pkgs.fetchFromGitHub {
+      owner = "instaloader";
+      repo = "instaloader";
+      rev = "pull/2533/head";
+      sha256 = "sha256-LMRU49pyAWDdflPbA4cZ9pIdjGNThLWfZWZsQkcvTs4=";
+    };
+  });
+}

overlays/zathura.nix

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+# `zathura_core` is not a toplevel package, threfore `prev.zathura_core` is not available
+# Maybe `overrideScope` is needed: overrideScope = (scope -> scope -> AttrSet) -> scope
+# But I don't know how to use it.
+# zathura package definition: https://github.com/NixOS/nixpkgs/blob/nixos-24.11/pkgs/applications/misc/zathura/default.nix
+
+final: prev: {
+  # error: attribute 'overrideScope' missing
+  zathura = prev.zathura.overrideScope {
+    zathura_core = prev.zathura_core.overrideAttrs (oldAttrs: rec {
+      version = "0.5.4"; # latest version before https://github.com/pwmt/zathura/issues/447
+      src = prev.fetchFromGitHub {
+        owner = "pwmt";
+        repo = "zathura";
+        rev = version;
+        hash = "";
+      };
+    });
+  };
+}