refactor: reduce amount of nix versions

common/default.nix

@@ -26,17 +26,8 @@
   boot.tmp.useTmpfs = true;
 
   nix = {
-    # Keep a version that works with nix-eval-jobs
+    # See $FLAKE/common/overlays/nix-package.nix
-    package = pkgs.nixVersions.git.overrideAttrs (oldAttrs: {
+    package = pkgs.nix;
-      pname = "nix";
-      version = "2.21.3";
-      src = pkgs.fetchFromGitHub {
-        owner = "NixOS";
-        repo = "nix";
-        rev = "60824fa97c588a0faf68ea61260a47e388b0a4e5";
-        sha256 = "10z/SoidVl9/lh56cMLj7ntJZHtVrumFvmn1YEqXmaM=";
-      };
-    });
 
     # Edit nix.conf
     settings = {
@@ -107,7 +98,10 @@
       home.packages =
         [
           nix-melt.packages.${pkgs.system}.default
-          nurl.packages.${pkgs.system}.default
+
+          (nurl.packages.${pkgs.system}.default.override {
+            nix = config.nix.package;
+          })
         ]
         ++ (with config.nur.repos.rycee; [
           mozilla-addons-to-nix

common/home/direnv/default.nix

@@ -2,9 +2,10 @@
   programs.direnv = {
     enable = true;
     enableBashIntegration = true;
+
     nix-direnv = {
       enable = true;
-      package = pkgs.nix-direnv-flakes;
+      package = pkgs.nix-direnv;
     };
   };
 }

common/home/packages.nix

@@ -27,5 +27,14 @@
       usbutils
       wget
       zip
-    ]);
+    ])
+    ++ [
+      # This could help as well: nix derivation show -r /run/current-system
+      (pkgs.writeShellApplication {
+        name = "listDerivs";
+        text = ''
+          nix-store --query --requisites /run/current-system | cut -d- -f2- | sort -u
+        '';
+      })
+    ];
 }

common/overlays/default.nix

@@ -4,6 +4,7 @@
   ...
 } @ inputs: [
   (import ./dracula-theme inputs)
+  (import ./nix-package.nix)
 
   grim-hyprland.overlays.default
   nixpkgs-wayland.overlay

common/overlays/nix-package.nix

@@ -0,0 +1,12 @@
+(self: super: {
+  nix = self.nixVersions.nix_2_21.overrideAttrs (o: {
+    pname = "nix";
+    version = "2.21.3";
+    src = self.fetchFromGitHub {
+      owner = "NixOS";
+      repo = "nix";
+      rev = "60824fa97c588a0faf68ea61260a47e388b0a4e5";
+      sha256 = "10z/SoidVl9/lh56cMLj7ntJZHtVrumFvmn1YEqXmaM=";
+    };
+  });
+})

devices/servivi/modules/binary-cache.nix

@@ -8,12 +8,16 @@
   inherit (config.vars) mainUser;
   inherit (config.sops) secrets;
 
-  nixPkg = {
+  nix-eval-jobsPkg =
-    nix = config.nix.package;
+    nix-eval-jobs.packages.${pkgs.system}.default.override {
-  };
+      nix = config.nix.package;
+    }
+    // {
+      nix = config.nix.package;
+    };
+
   nix-fast-buildPkg = nix-fast-build.packages.${pkgs.system}.nix-fast-build.override {
-    nix-eval-jobs =
+    nix-eval-jobs = nix-eval-jobsPkg;
-      nix-eval-jobs.packages.${pkgs.system}.default.override nixPkg // nixPkg;
   };
 in {
   services.nix-serve = {

flake.lock

@@ -1532,22 +1532,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_3": {
-      "locked": {
-        "lastModified": 1708296515,
-        "narHash": "sha256-FyF489fYNAUy7b6dkYV6rGPyzp+4tThhr80KNAaF/yY=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "b98a4e1746acceb92c509bc496ef3d0e5ad8d4aa",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nmd": {
       "flake": false,
       "locked": {
@@ -1639,18 +1623,20 @@
     },
     "nurl": {
       "inputs": {
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1708368674,
+        "lastModified": 1717025176,
-        "narHash": "sha256-QzvpuikAHHHN91pDkBDoUx3x8LJVHbk2JDwYXe87WCc=",
+        "narHash": "sha256-3S6pdNj+ui0fX1tBtWQlEYIuY3Uy3xiSzjfMxAjSlD8=",
-        "owner": "nix-community",
+        "owner": "matt1432",
         "repo": "nurl",
-        "rev": "7f789ea2da9ff52724efb38df01ecda87704fc87",
+        "rev": "1086a09f386d76e93fa6db46e0d002e4f5dc12c0",
         "type": "github"
       },
       "original": {
-        "owner": "nix-community",
+        "owner": "matt1432",
         "repo": "nurl",
         "type": "github"
       }

flake.nix

@@ -244,7 +244,8 @@
       type = "github";
     };
     nurl = {
-      owner = "nix-community";
+      inputs.nixpkgs.follows = "nixpkgs";
+      owner = "matt1432";
       repo = "nurl";
       type = "github";
     };

inputs.nix

@@ -9,8 +9,8 @@ let
 
   # Inputs
   nixTools = {
-    nurl = mkInput {
+    nurl = mkDep {
-      owner = "nix-community";
+      owner = "matt1432";
       repo = "nurl";
     };
 
@@ -58,6 +58,7 @@ let
       repo = "stylelint-lsp";
     };
 
+    # uses nixVersions.nix_2_19
     nixd = mkDep {
       owner = "nix-community";
       repo = "nixd";