Merge pull request nix-community#16 from Mic92/master

make nixos-generators installable

Makefile

@@ -0,0 +1,13 @@
+PREFIX ?= /usr/local
+SHARE ?= $(PREFIX)/share/nixos-generator
+
+all:
+
+install:
+	mkdir -p $(PREFIX)/bin $(SHARE)
+	sed \
+		-e "s|libexec_dir=\".*\"|libexec_dir=\"$(SHARE)\"|" \
+		-e "s|#!/usr/bin/env.*|#!/usr/bin/env bash|" \
+		nixos-generate > $(PREFIX)/bin/nixos-generate
+	chmod 755 $(PREFIX)/bin/nixos-generate
+	cp -r formats config.nix eval-format.nix $(SHARE)

README.md

@@ -18,6 +18,14 @@ or
 it echoes the path to a iso image, which you then can flash onto an usb-stick
 or mount & boot in a virtual machine.
 
+# Installation
+
+nixos-generators can be installed from source into the user profile like this:
+
+```console
+$ nix-env -f https://github.com/nix-community/nixos-generators/archive/master.tar.gz -i
+```
+
 ## Supported formats
 
 format | description

default.nix

@@ -0,0 +1,13 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+with pkgs;
+stdenv.mkDerivation {
+  name = "nixos-generators";
+  src = ./.;
+  nativeBuildInputs = [ makeWrapper ];
+  installFlags = [ "PREFIX=$(out)" ];
+  postFixup = ''
+    wrapProgram $out/bin/nixos-generate \
+      --prefix PATH : ${lib.makeBinPath [ jq coreutils findutils nix ] }
+  '';
+}