Add Nix Flake support (#180)

Fixes #160

README.md

@@ -30,6 +30,7 @@
 ## Table of Contents
 
 - [📦 Installation](#-installation)
+  - [Nix](#nix)
   - [Homebrew](#homebrew)
   - [Cargo](#cargo)
   - [Cargo BInstall](#cargo-binstall)
@@ -81,6 +82,14 @@
 
 ## 📦 Installation
 
+### Nix
+
+This repository is a flake, and can be installed using nix profile:
+
+```
+nix profile install "github:rossmacarthur/sheldon"
+```
+
 ### Homebrew
 
 Sheldon can be installed using Homebrew.

docs/src/Installation.md

@@ -1,5 +1,13 @@
 # 📦 Installation
 
+## Nix
+
+This repository is a flake, and can be installed using nix profile:
+
+```
+nix profile install "github:rossmacarthur/sheldon"
+```
+
 ## Homebrew
 
 Sheldon can be installed using Homebrew.

flake.nix

@@ -0,0 +1,34 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
+  };
+  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          overlays = [ (import rust-overlay) ];
+          pkgs = import nixpkgs {
+            inherit system overlays;
+          };
+        in
+        with pkgs;
+        {
+        packages.sheldon = pkgs.callPackage ./sheldon.nix {
+            inherit (pkgs.darwin.apple_sdk.frameworks) Security;
+          };
+        packages.default = self.outputs.packages.${system}.sheldon;
+        defaultPackage = self.packages.${system}.sheldon;
+          devShells.default = mkShell {
+            buildInputs = [ rust-bin.stable.latest.default ];
+          };
+        }
+      );
+}

sheldon.nix

@@ -0,0 +1,38 @@
+# Sheldon package definition
+#
+# This file will be similar to the package definition in nixpkgs:
+#     https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/sh/sheldon/package.nix
+#
+# Helpful documentation: https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks/rust.section.md
+{
+  pkgs,
+  lib,
+  stdenv,
+  installShellFiles,
+  rustPlatform,
+  Security,
+}:
+rustPlatform.buildRustPackage {
+  name = "sheldon";
+
+  src = lib.cleanSource ./.;
+
+  cargoLock = {
+    lockFile = ./Cargo.lock;
+    # Allow dependencies to be fetched from git and avoid having to set the outputHashes manually
+    allowBuiltinFetchGit = true;
+  };
+
+  nativeBuildInputs = [installShellFiles];
+
+  buildInputs = [ pkgs.openssl pkgs.curl ] ++ lib.optionals stdenv.isDarwin [Security];
+
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Fast, configurable, shell plugin manager";
+    homepage = "https://github.com/rossmacarthur/sheldon";
+    license = licenses.mit;
+    mainProgram = "sheldon";
+  };
+}