flake.nix

   1 {
   2 inputs.nixpkgs.url = "github:NixOS/nixpkgs/8585991bfb629edda1e42c191bef935d9d70d690";
   3 inputs.flake-utils.url = "github:numtide/flake-utils";
   4 outputs = inputs: let
   5   remoteNixpkgsPatches = import nixpkgs/patches.nix;
   6   localNixpkgsPatches = [
   7   ];
   8   originPkgs = inputs.nixpkgs.legacyPackages."x86_64-linux";
   9   nixpkgsPath = originPkgs.applyPatches {
  10     name = "nixpkgs-patched";
  11     src = inputs.nixpkgs.outPath;
  12     patches = map originPkgs.fetchpatch remoteNixpkgsPatches ++ localNixpkgsPatches;
  13     postPatch = ''
  14       patch=$(printf '%s\n' ${builtins.concatStringsSep " "
  15          (map (p: p.sha256) remoteNixpkgsPatches ++ localNixpkgsPatches)} |
  16         sort | sha256sum | cut -c -7)
  17       echo "+patch-$patch" >.version-suffix
  18     '';
  19   };
  20   lib = originPkgs.lib;
  21   in {
  22   nixosConfigurations.oignon =
  23     let machineName = "oignon"; in
  24     import (nixpkgsPath + "/nixos/lib/eval-config.nix") {
  25     #inputs.nixpkgs.lib.nixosSystem {
  26       system = "x86_64-linux";
  27       extraArgs = {
  28         inherit machineName inputs;
  29         machines = inputs.self.nixosConfigurations;
  30       };
  31       modules = [
  32         ({ pkgs, ... }: {
  33           nix.registry.nixpkgs.flake = inputs.nixpkgs;
  34           nix.package = pkgs.nixFlakes;
  35           nix.extraOptions = "experimental-features = nix-command flakes";
  36           #nixpkgs.overlays = import nixpkgs/overlays.nix;
  37           /*
  38           system.nixos.versionSuffix = ".${
  39             lib.substring 0 8 (inputs.self.lastModifiedDate or inputs.self.lastModified)}.${
  40             inputs.self.shortRev or "dirty"}";
  41           system.nixos.revision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
  42           */
  43           # Let 'nixos-version --json' know about the Git revision of this flake.
  44           system.configurationRevision = lib.mkIf (inputs.self ? rev) inputs.self.rev;
  45           /*
  46           system.configurationRevision =
  47             if inputs.self ? rev
  48             then inputs.self.rev
  49             else throw "Refusing to build from a dirty Git tree!";
  50           */
  51         })
  52         (import (./machines + "/${machineName}.nix"))
  53         inputs.nixpkgs.nixosModules.notDetected
  54       ];
  55     };
  56   } //
  57   inputs.flake-utils.lib.eachDefaultSystem (system:
  58     #let pkgs = inputs.nixpkgs.legacyPackages.${system}; in
  59     let
  60     pkgs = import nixpkgsPath {
  61       inherit system;
  62       config = {}; # Make the config pure, ignoring user's config.
  63       #overlays = import nixpkgs/overlays.nix;
  64     }; in {
  65       devShell = import ./shell.nix { inherit pkgs; };
  66     }
  67   );
  68 }