add support for nix packages

Author: atomicptr

.github/workflows/build.yml

@@ -22,6 +22,9 @@ jobs:
       - uses: actions/setup-go@v3
         with:
           go-version: '^1.22'
+      - uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
       - name: Install Dependencies
         run: |
           go install github.com/mattn/goveralls@latest

.goreleaser.yml

@@ -36,7 +36,6 @@ release:
     name: crab
   draft: false
 
-
 ## AUR
 aurs:
   - name: crab-bin
@@ -54,6 +53,18 @@ aurs:
       - &maintainer "Christopher Kaster <[email protected]>"
     license: &license MIT
 
+## Nix:
+nix:
+  - name: crab
+    repository:
+      owner: atomicptr
+      name: nix
+      branch: master
+      token: "{{ .Env.GITHUB_TOKEN }}"
+    homepage: *homepage
+    description: *description
+    license: mit
+
 ## Homebrew
 brews:
   - name: crab

README.md

@@ -43,6 +43,21 @@ $ docker run --rm atomicptr/crab crawl:sitemap https://domain.com/sitemap.xml
 
 [AUR](https://aur.archlinux.org/packages/crab-bin)
 
+### Nix
+
+Not available in nixpkgs but I have my own nix repository which you can use:
+
+```nix
+let
+  atomicptr = import (fetchTarball "https://github.com/atomicptr/nix/archive/refs/heads/master.tar.gz") {};
+in
+{
+  environment.systemPackages = with pkgs; [
+    atomicptr.crab
+  ];
+}
+````
+
 ### Homebrew
 
 ```bash