feat: Add nix support

.github/workflows/nix.yml

@@ -0,0 +1,39 @@
+name: Nix-Test
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # write required for action-gh-release
+      id-token: write
+      packages: write # write required for pushing docker
+    steps:
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Run `nix fmt`
+        run: nix fmt -- --check *
+      - name: Run `flake checks`
+        run: nix flake check -L
+      - name: Create AppImage
+        run: nix build .#audible-cli-AppImage
+      - name: Test appimage
+        run: ./result decrypt --help
+      - name: Rename AppImage
+        if: startsWith(github.ref, 'refs/tags/')
+        run: cp ./result audible-cli.AppImage
+      - name: Release-AppImage
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: audible-cli.AppImage
+      - name: Release Docker
+        if: startsWith(github.ref, 'refs/tags/')
+        run: |
+          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+          nix run .#docker-pusher

.gitignore

@@ -3,6 +3,9 @@
 /src/audible_cli/*.bak
 library.csv
 
+result
+*.AppImage
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

flake.nix

@@ -0,0 +1,63 @@
+{
+  description = "Nix related tooling for a command line interface for audible. With the CLI you can download your Audible books, cover, chapter files & conver them.";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    systems.url = "github:nix-systems/x86_64-linux";
+    flake-compat.url = "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz";
+    nix-filter.url = "github:numtide/nix-filter";
+    nix-appimage = {
+      url = "github:ralismark/nix-appimage";
+    };
+  };
+  outputs = {
+    self,
+    nixpkgs,
+    systems,
+    nix-appimage,
+    flake-compat,
+    nix-filter,
+  } @ inputs: let
+    eachSystem = nixpkgs.lib.genAttrs (import systems);
+    pkgsFor = eachSystem (system: (nixpkgs.legacyPackages.${system}.extend self.overlays.default));
+  in {
+    formatter = eachSystem (system: pkgsFor.${system}.alejandra);
+    checks = eachSystem (system: self.packages.${system});
+    overlays = import ./nix/overlays.nix {
+      inherit inputs;
+      lib = nixpkgs.lib; # TODO: Understand this construct
+    };
+
+    packages = eachSystem (system: let
+      pkgs = pkgsFor.${system};
+    in rec {
+      audible-cli = pkgs.audible-cli;
+      audible-cli-full = pkgs.audible-cli-full;
+      isbntools = pkgs.python3Packages.isbntools;
+      audible-cli-AppImage = inputs.nix-appimage.mkappimage.${system} {
+        drv = audible-cli-full;
+        name = audible-cli-full.name;
+        entrypoint = pkgs.lib.getExe audible-cli-full;
+      };
+      audible-cli-docker = pkgs.dockerTools.buildLayeredImage {
+        name = audible-cli-full.pname; # `.name` has illegal docker tag format
+        tag = "latest";
+        contents = [audible-cli-full];
+        config = {
+          Entrypoint = [
+            "${pkgs.lib.getExe audible-cli-full}"
+          ];
+        };
+      };
+      default = audible-cli-full;
+      docker-pusher = pkgs.writeShellApplication {
+        name = "docker-pusher";
+        runtimeInputs = [pkgs.skopeo];
+        text = ''
+          nix build .#audible-cli-docker
+          DOCKER_REPOSITORY="docker://ghcr.io/mkb79/audible-cli"
+          skopeo --insecure-policy copy "docker-archive:result" "$DOCKER_REPOSITORY"
+        '';
+      };
+    });
+  };
+}