First iteration

devenv.nix

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+{ pkgs, lib, config, inputs, ... }:
+
+{
+  # https://devenv.sh/basics/
+  # env.GREET = "devenv";
+
+  # https://devenv.sh/packages/
+  packages = with pkgs; [
+    guile
+  ];
+
+  # https://devenv.sh/languages/
+  # languages.rust.enable = true;
+
+  # https://devenv.sh/processes/
+  # processes.dev.exec = "${lib.getExe pkgs.watchexec} -n -- ls -la";
+
+  # https://devenv.sh/services/
+  # services.postgres.enable = true;
+
+  # https://devenv.sh/scripts/
+  # scripts.hello.exec = ''
+  #   echo hello from $GREET
+  # '';
+
+  # https://devenv.sh/basics/
+  # enterShell = ''
+  #   hello         # Run scripts directly
+  #   git --version # Use packages
+  # '';
+
+  # https://devenv.sh/tasks/
+  # tasks = {
+  #   "myproj:setup".exec = "mytool build";
+  #   "devenv:enterShell".after = [ "myproj:setup" ];
+  # };
+
+  # https://devenv.sh/tests/
+  # enterTest = ''
+  #   echo "Running tests"
+  #   git --version | grep --color=auto "${pkgs.git.version}"
+  # '';
+
+  # https://devenv.sh/git-hooks/
+  # git-hooks.hooks.shellcheck.enable = true;
+
+  # See full reference at https://devenv.sh/reference/options/
+}