feat(devenv): make new devenv config that integrates alejandra and commitizen

devenv.nix

@@ -0,0 +1,48 @@
+{
+  pkgs,
+  lib,
+  config,
+  inputs,
+  ...
+}: {
+  # https://devenv.sh/basics/
+  env.GREET = "devenv";
+  cachix.enable = false;
+  # https://devenv.sh/packages/
+  packages = [pkgs.git];
+
+  # https://devenv.sh/languages/
+  # languages.rust.enable = true;
+  languages.nix.enable = true;
+  pre-commit.hooks = {
+    alejandra.enable = true;
+    shellcheck.enable = true;
+    commitizen.enable = true;
+  };
+  # https://devenv.sh/processes/
+  # processes.cargo-watch.exec = "cargo-watch";
+
+  # https://devenv.sh/services/
+  # services.postgres.enable = true;
+
+  # https://devenv.sh/scripts/
+  scripts.hello.exec = ''
+    echo hello from $GREET
+  '';
+
+  enterShell = ''
+    hello
+    git --version
+  '';
+
+  # https://devenv.sh/tests/
+  enterTest = ''
+    echo "Running tests"
+    git --version | grep --color=auto "${pkgs.git.version}"
+  '';
+
+  # https://devenv.sh/pre-commit-hooks/
+  # pre-commit.hooks.shellcheck.enable = true;
+
+  # See full reference at https://devenv.sh/reference/options/
+}