nixos-*: init as package

Move all the nixos-* scripts from the nixos distribution as real
packages in the pkgs/ package set.

This allows non-nixos users to run the script as well. For example,
deploying a remote machine with:

    nixos-rebuild --target-host root@hostname --build-host root@hostname

nixos/modules/installer/tools/tools.nix

@@ -6,77 +6,35 @@
 with lib;
 
 let
-  makeProg = args: pkgs.substituteAll (args // {
-    dir = "bin";
-    isExecutable = true;
-  });
-
-  nixos-build-vms = makeProg {
-    name = "nixos-build-vms";
-    src = ./nixos-build-vms/nixos-build-vms.sh;
-  };
-
-  nixos-install = makeProg {
-    name = "nixos-install";
-    src = ./nixos-install.sh;
-    nix = config.nix.package.out;
-    path = makeBinPath [ nixos-enter ];
-  };
-
-  nixos-rebuild =
-    let fallback = import ./nix-fallback-paths.nix; in
-    makeProg {
-      name = "nixos-rebuild";
-      src = ./nixos-rebuild.sh;
-      nix = config.nix.package.out;
-      nix_x86_64_linux = fallback.x86_64-linux;
-      nix_i686_linux = fallback.i686-linux;
-    };
-
-  nixos-generate-config = makeProg {
-    name = "nixos-generate-config";
-    src = ./nixos-generate-config.pl;
-    path = [ pkgs.btrfs-progs ];
-    perl = "${pkgs.perl}/bin/perl -I${pkgs.perlPackages.FileSlurp}/lib/perl5/site_perl";
-    inherit (config.system.nixos) release;
-  };
-
-  nixos-option = makeProg {
-    name = "nixos-option";
-    src = ./nixos-option.sh;
-  };
-
-  nixos-version = makeProg {
-    name = "nixos-version";
-    src = ./nixos-version.sh;
-    inherit (config.system.nixos) version codeName revision;
-  };
-
-  nixos-enter = makeProg {
-    name = "nixos-enter";
-    src = ./nixos-enter.sh;
-  };
-
+  nixos-build-vms = pkgs.nixos-build-vms;
+  nixos-enter = pkgs.nixos-enter;
+  nixos-generate-config = pkgs.nixos-generate-config.override { inherit (config.system.nixos) release; };
+  nixos-install = pkgs.nixos-install.override { nix = config.nix.package; };
+  nixos-option = pkgs.nixos-option;
+  nixos-rebuild = pkgs.nixos-rebuild.override { nix = config.nix.package; };
+  nixos-version = pkgs.nixos-version.override { inherit (config.system.nixos) version codeName revision; };
 in
 
 {
-
   config = {
-
-    environment.systemPackages =
-      [ nixos-build-vms
-        nixos-install
-        nixos-rebuild
-        nixos-generate-config
-        nixos-option
-        nixos-version
-        nixos-enter
-      ];
+    environment.systemPackages = [
+      nixos-build-vms
+      nixos-enter
+      nixos-generate-config
+      nixos-install
+      nixos-option
+      nixos-rebuild
+      nixos-version
+    ];
 
     system.build = {
-      inherit nixos-install nixos-generate-config nixos-option nixos-rebuild nixos-enter;
+      inherit
+        nixos-enter
+        nixos-generate-config
+        nixos-install
+        nixos-option
+        nixos-rebuild
+        ;
     };
-
   };
-
 }

pkgs/tools/nixos/nixos-build-vms/default.nix

@@ -0,0 +1,7 @@
+{ substituteAll }:
+substituteAll {
+  name = "nixos-build-vms";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-build-vms.sh;
+}

pkgs/tools/nixos/nixos-build-vms/nixos-build-vms.sh

@@ -35,7 +35,7 @@ do
 	    exit 0
 	    ;;
     esac
-    
+
     shift
 done
 

pkgs/tools/nixos/nixos-enter/default.nix

@@ -0,0 +1,7 @@
+{ substituteAll }:
+substituteAll {
+  name = "nixos-enter";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-enter.sh;
+}

pkgs/tools/nixos/nixos-generate-config/default.nix

@@ -0,0 +1,16 @@
+{ substituteAll
+, btrfs-progs
+, perl
+, perlPackages
+, lib
+, release ? lib.trivial.release
+}:
+substituteAll {
+  name = "nixos-generate-config";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-generate-config.pl;
+  path = [ btrfs-progs ];
+  perl = "${perl}/bin/perl -I${perlPackages.FileSlurp}/lib/perl5/site_perl";
+  inherit release;
+}

pkgs/tools/nixos/nixos-install/default.nix

@@ -0,0 +1,13 @@
+{ substituteAll
+, lib
+, nix
+, nixos-enter
+}:
+substituteAll {
+  name = "nixos-install";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-install.sh;
+  nix = nix.out;
+  path = lib.makeBinPath [ nixos-enter ];
+}

pkgs/tools/nixos/nixos-option/default.nix

@@ -0,0 +1,7 @@
+{ substituteAll }:
+substituteAll {
+  name = "nixos-option";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-option.sh;
+}

pkgs/tools/nixos/nixos-rebuild/default.nix

@@ -0,0 +1,13 @@
+{ substituteAll, nix }:
+let
+  fallback = import ./nix-fallback-paths.nix;
+in
+  substituteAll {
+    name = "nixos-rebuild";
+    dir = "bin";
+    isExecutable = true;
+    src = ./nixos-rebuild.sh;
+    nix = nix.out;
+    nix_x86_64_linux = fallback.x86_64-linux;
+    nix_i686_linux = fallback.i686-linux;
+  }

pkgs/tools/nixos/nixos-version/default.nix

@@ -0,0 +1,13 @@
+{ substituteAll
+, lib
+, version ? lib.trivial.version
+, codeName ? "unknown"
+, revision ? lib.trivial.revisionWithDefault "master"
+}:
+substituteAll {
+  name = "nixos-version";
+  dir = "bin";
+  isExecutable = true;
+  src = ./nixos-version.sh;
+  inherit version codeName revision;
+}

pkgs/top-level/all-packages.nix

@@ -21951,6 +21951,16 @@ with pkgs;
     nixStable
     nixUnstable;
 
+  # NixOS tools
+  nixos-build-vms = callPackage ../tools/nixos/nixos-build-vms { };
+  nixos-enter = callPackage ../tools/nixos/nixos-enter { };
+  nixos-generate-config = callPackage ../tools/nixos/nixos-generate-config { };
+  nixos-install = callPackage ../tools/nixos/nixos-install { };
+  nixos-option = callPackage ../tools/nixos/nixos-option { };
+  nixos-rebuild = callPackage ../tools/nixos/nixos-rebuild { };
+  nixos-version = callPackage ../tools/nixos/nixos-version { };
+
+
   nixops = callPackage ../tools/package-management/nixops { };
 
   nixopsUnstable = lowPrio (callPackage ../tools/package-management/nixops/unstable.nix { });