Devenv Setup

Author: maennchen

.envrc

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+export DIRENV_WARN_TIMEOUT=20s
+
+eval "$(devenv direnvrc)"
+
+# `use devenv` supports the same options as the `devenv shell` command.
+#
+# To silence all output, use `--quiet`.
+#
+# Example usage: use devenv --quiet --impure --option services.postgres.enable:bool true
+use devenv

.gitignore

@@ -18,3 +18,14 @@ logs
 *.iml
 rebar3.crashdump
 *~
+
+# Devenv
+.devenv*
+devenv.local.nix
+devenv.local.yaml
+
+# direnv
+.direnv
+
+# pre-commit
+.pre-commit-config.yaml

devenv.lock

@@ -0,0 +1,123 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1770399425,
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "0f006b2e9f591cc44cf219048b5e33793530403b",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1767039857,
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1769939035,
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "a8ca480175326551d6c4121498316261cbb5b260",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1762808025,
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "cb5e3fdca1de58ccbc3ef53de65bd372b48f567c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "inputs": {
+        "nixpkgs-src": "nixpkgs-src"
+      },
+      "locked": {
+        "lastModified": 1770434727,
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "8430f16a39c27bdeef236f1eeb56f0b51b33d348",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1769922788,
+        "narHash": "sha256-H3AfG4ObMDTkTJYkd8cz1/RbY9LatN5Mk4UF48VuSXc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "207d15f1a6603226e1e223dc79ac29c7846da32e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "git-hooks": "git-hooks",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": [
+          "git-hooks"
+        ]
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

devenv.nix

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: 2026 Erlang Ecosystem Foundation
+
+{ pkgs, lib, config, inputs, ... }:
+{
+  packages = with pkgs; [
+    git
+    reuse
+  ];
+
+  languages.erlang = {
+    enable = true;
+  };
+}

devenv.yaml

@@ -0,0 +1,15 @@
+# yaml-language-server: $schema=https://devenv.sh/devenv.schema.json
+inputs:
+  nixpkgs:
+    url: github:cachix/devenv-nixpkgs/rolling
+
+# If you're using non-OSS software, you can set allowUnfree to true.
+# allowUnfree: true
+
+# If you're willing to use a package that's vulnerable
+# permittedInsecurePackages:
+#  - "openssl-1.1.1w"
+
+# If you have more than one devenv you can merge them
+#imports:
+# - ./backend