Initial commit based on original arqv repository

README.md

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+# Nix Flake for Zig
+
+This repository is a Nix flake packaging the [Zig](https://ziglang.com)
+compiler. The flake mirrors the binaries built officially by Zig and
+does not build them from source.
+
+Provided packages:
+
+  * Nightly versions updated daily (`.master.<date>`), starting from version
+    `0.8.0-dev.1140+9270aae07` dated 2021-02-13, and latest master
+	(`.master.latest`) for the sake of convenience.
+  * Release versions.
+
+## Usage
+
+### Flake Support
+
+In your `flake.nix` file:
+
+```nix
+{
+  inputs.zig.url = "github:mitchellh/zig-overlay";
+  outputs = { self, zig, ... }: {
+    ...
+  };
+}
+```
+
+In a shell:
+
+```sh
+# run the latest version (0.7.1)
+$ nix run 'github:mitchellh/zig-overlay'
+# open a shell with master version dated 2021-02-13 (oldest version available)
+$ nix shell 'github:mitchellh/zig-overlay#master."2021-02-13"'
+# open a shell with latest master version
+$ nix shell 'github:mitchellh/zig-overlay#master.latest'
+```
+
+### No Flake Support
+
+Import in your project as you would normally (`pkgs.fetchFromGitHub` or
+`builtins.fetchgit`). The `default.nix` exposes a `pkgs` argument for possible
+pinning of the nixpkgs repository, and a `system` argument which defaults to
+`builtins.currentSystem`.
+
+```nix
+# It is a good idea to use an exact commit in place of 'main' here.
+let zigf = fetchTarball "https://github.com/mitchellh/zig-overlay/archive/main.tar.gz" in
+# If you're using home-manager
+home.packages = [ zigf.master.latest ]; # or any available version
+# If you're using NixOS
+users.user.<username>.packages = [ zigf.master.latest ]; # or any available version
+# ...the rest of your configuration
+```
+
+## Thanks
+
+This repository is originally hosted by the username `arqv`. This user
+and repository disappeared at some point and I had a local checkout so
+I've forked it, modified it, and reuploaded it here.