Merge pull request #17 from Mic92/joerg-ci

set experimental-features for nix consistently

README.md

@@ -91,6 +91,15 @@ Actions.
 To optimize this, use the `--skip-cached` flag with `nix-fast-build`. This
 ensures that only those packages missing from the binary caches will be built.
 
+## Specifying Build Systems
+
+By default, `nix-fast-build` evaluates all architectures but only initiates
+builds for the current system. You can modify this behavior with the `--systems`
+flag. For instance, using `--systems "aarch64-linux x86_64-linux"` will prompt
+builds for both `aarch64-linux` and `x86_64-linux` architectures. Ensure that
+your system is capable of building for the specified architectures, either
+locally or through the remote builder protocol.
+
 ## Reference
 
 ```console

nix_fast_build/__init__.py

@@ -149,7 +149,7 @@ async def parse_args(args: list[str]) -> Options:
     )
     parser.add_argument(
         "--systems",
-        help="Comma-separated list of systems to build for (default: current system)",
+        help="Space-separated list of systems to build for (default: current system)",
         default=None,
     )
     parser.add_argument(
@@ -234,7 +234,7 @@ async def parse_args(args: list[str]) -> Options:
     if a.systems is None:
         systems = set([nix_config.get("system", "")])
     else:
-        systems = set(a.systems.split(","))
+        systems = set(a.systems.split(" "))
 
     return Options(
         flake_url=flake_url,