Add nix support

.gitignore

@@ -13,4 +13,11 @@ tmp/
 .idea
 
 # build output
-air
+air
+
+# Dev evnrionment files 
+.devenv
+.direnv
+.envrc
+.pre-commit-config.yaml
+result 

README.md

@@ -128,6 +128,15 @@ this will replace `$PWD` with the current directory, `$AIR_PORT` is the port whe
 
 </details>
 
+
+### Nix flake input
+
+Add air as a Nix flake input in `flake.nix`
+
+```nix
+inputs.air.url = "github:cosmtrek/air";
+```
+
 ## Usage
 
 For less typing, you could add `alias air='~/.air'` to your `.bashrc` or `.zshrc`.
@@ -298,6 +307,14 @@ make install
 
 Pull requests are welcome.
 
+### Nix users 
+
+Start a development shell with all `air`'s dependencies present.
+
+```bash
+nix develop --impure 
+```
+
 ### Release
 
 ```shell

default.nix

@@ -0,0 +1,31 @@
+{
+  pkgs ? (
+    let
+      inherit (builtins) fetchTree fromJSON readFile;
+      inherit ((fromJSON (readFile ./flake.lock)).nodes) nixpkgs gomod2nix;
+    in
+      import (fetchTree nixpkgs.locked) {
+        overlays = [
+          (import "${fetchTree gomod2nix.locked}/overlay.nix")
+        ];
+      }
+  ),
+  buildGoApplication ? pkgs.buildGoApplication,
+}:
+buildGoApplication rec {
+  pname = "air";
+  version = "dev";
+  src = ./.;
+  pwd = ./.;
+  subPackages = ["runner"];
+  checkPhase = false;
+  modules = ./gomod2nix.toml;
+
+  buildPhase = ''
+    LDFLAGS=" -X main.BuildTimestamp=$(date -u "+%Y-%m-%d-%H:%M:%S")"
+    LDFLAGS+=" -X main.airVersion=${version}"
+    LDFLAGS+=" -X main.goVersion=$(go version | sed -r 's/go version go(.*)\ .*/\1/')"
+
+    go build -o $out/bin/air -ldflags "$LDFLAGS"
+  '';
+}