Merge pull request #121 from nix-community/flakes

README: expand installation methods

README.md

@@ -20,12 +20,20 @@ or mount & boot in a virtual machine.
 
 # Installation
 
-nixos-generators can be installed from source into the user profile like this:
+nixos-generators is part of [nixpkgs](https://search.nixos.org/packages?channel=unstable&show=nixos-generators&from=0&size=50&sort=relevance&type=packages&query=nixos-generator) and can be installed from there.
+
+nixos-generators can be also 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
 ```
 
+or run from the nix flake without installing:
+
+```
+nix run github:nix-community/nixos-generators -- --help
+```
+
 ## Supported formats
 
 format | description

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "nixlib": {
       "locked": {
-        "lastModified": 1624753224,
-        "narHash": "sha256-ZUEcPzgU1w8ZYeEgfcpzeciYcZShQZbEfRN2tV+K2yQ=",
+        "lastModified": 1635640270,
+        "narHash": "sha256-7VRyUAgl/Aqh70fkx904zciroUnz1cIUu0MqMaVu1pU=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "7b4dc08734c5c4703b22b9c780417042e1c8f020",
+        "rev": "21595a2653dd84bbde02dadb0847a1bbb98a2663",
         "type": "github"
       },
       "original": {
@@ -17,11 +17,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1619285658,
-        "narHash": "sha256-GKbj/KKo8Z2WsEURFtWHbPI917NrUnD4H2J4lKUsSWI=",
+        "lastModified": 1635934775,
+        "narHash": "sha256-DUkBfZjgeefgqyvFxnkZiOOWXgHP5Y1oKp/Zm+LT05Y=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "118485230c02d13f62133bce43177ffd49495694",
+        "rev": "4789953e5c1ef6d10e3ff437e5b7ab8eed526942",
         "type": "github"
       },
       "original": {