flake.nix

   1 {
   2 inputs.nixpkgs.url = "github:NixOS/nixpkgs/b69f140a8028e4718bde4e5082f8df38e50b7971";
   3 inputs.flake-utils.url = "github:numtide/flake-utils";
   4 outputs = inputs: let
   5   remoteNixpkgsPatches = [
   6     /*
   7     { meta.description = "nixos-install: add support for inputs";
   8       url = "https://github.com/NixOS/nixpkgs/pull/95194.diff";
   9       sha256 = "sha256-R6LAHDM8FNQxsql5fiV16aDapKtZ7H/Q04pz1wjnSqQ";
  10     }
  11     */
  12   ];
  13   localNixpkgsPatches = [
  14   ];
  15   originPkgs = inputs.nixpkgs.legacyPackages."x86_64-linux";
  16   nixpkgsPath = originPkgs.applyPatches {
  17     name = "nixpkgs-patched";
  18     src = inputs.nixpkgs.outPath;
  19     patches = map originPkgs.fetchpatch remoteNixpkgsPatches ++ localNixpkgsPatches;
  20     postPatch = ''
  21       patch=$(printf '%s\n' ${builtins.concatStringsSep " "
  22          (map (p: p.sha256) remoteNixpkgsPatches ++ localNixpkgsPatches)} |
  23         sort | sha256sum | cut -c -7)
  24       echo "+patch-$patch" >.version-suffix
  25     '';
  26   };
  27   lib = originPkgs.lib;
  28   in {
  29   nixosConfigurations.oignon =
  30     let machineName = "oignon"; in
  31     #import (nixpkgsPath + "/nixos/lib/eval-config.nix") {
  32     inputs.nixpkgs.lib.nixosSystem {
  33       system = "x86_64-linux";
  34       extraArgs = {
  35         inherit machineName inputs;
  36         machines = inputs.self.nixosConfigurations;
  37       };
  38       modules = [
  39         ({ pkgs, ... }: {
  40           nix.registry.nixpkgs.flake = inputs.nixpkgs;
  41           nix.package = pkgs.nixFlakes;
  42           nix.extraOptions = "experimental-features = nix-command flakes";
  43           #nixpkgs.overlays = import nixpkgs/overlays.nix;
  44           /*
  45           system.nixos.versionSuffix = ".${
  46             lib.substring 0 8 (inputs.self.lastModifiedDate or inputs.self.lastModified)}.${
  47             inputs.self.shortRev or "dirty"}";
  48           system.nixos.revision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
  49           */
  50           # Let 'nixos-version --json' know about the Git revision of this flake.
  51           system.configurationRevision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
  52           /*
  53           system.configurationRevision =
  54             if inputs.self ? rev
  55             then inputs.self.rev
  56             else throw "Refusing to build from a dirty Git tree!";
  57           */
  58         })
  59         (import (./machines + "/${machineName}.nix"))
  60         inputs.nixpkgs.nixosModules.notDetected
  61       ];
  62     };
  63   } //
  64   inputs.flake-utils.lib.eachDefaultSystem (system:
  65     #let pkgs = inputs.nixpkgs.legacyPackages.${system}; in
  66     let
  67     pkgs = import nixpkgsPath {
  68       inherit system;
  69       config = {}; # Make the config pure, ignoring user's config.
  70       #overlays = import nixpkgs/overlays.nix;
  71     }; in {
  72       devShell = import ./shell.nix { inherit pkgs; };
  73     }
  74   );
  75 }