chore: migrate development environment from Nix flakes to devenv

Replace Nix flake-based development setup with devenv for better
developer experience and more streamlined environment management.

Changes:
  - Remove flake.nix and flake.lock files
  - Add devenv.nix, devenv.yaml, and devenv.lock configuration
  - Update .envrc to use devenv instead of nix develop
  - Remove Docker development setup (compose.dev.yml, docker/mod.just)
  - Expand .gitignore with comprehensive IDE and OS exclusions
  - Remove Docker-related just commands from justfile

.envrc

@@ -1,2 +1,7 @@
-use flake
+export DIRENV_WARN_TIMEOUT=20s
-dotenv_if_exists
+
+eval "$(devenv direnvrc)"
+
+# The use_devenv function supports passing flags to the devenv command
+# For example: use devenv --impure --option services.postgres.enable:bool true
+use devenv

.github/workflows/ci.yaml

@@ -32,16 +32,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v27
+        uses: cachix/install-nix-action@v31
-        with:
+      - name: Install devenv
-          nix_path: nixpkgs=channel:nixos-unstable
+        run: nix profile install nixpkgs#devenv
       - name: Migrate database
-        run: nix develop --command -- just migrate
+        run: devenv shell just migrate
       - name: Formatting check
-        run: nix develop --command -- just format-check
+        run: devenv shell just format-check
       - name: Lint
-        run: nix develop --command -- just lint
+        run: devenv shell just lint
       - name: Audit
-        run: nix develop --command -- just audit
+        run: devenv shell just audit
       - name: Tests
-        run: nix develop --command -- just test
+        run: devenv shell just test

.gitignore

@@ -2,3 +2,54 @@
 .env
 /coverage
 /target
+
+# Devenv
+.devenv*
+devenv.local.nix
+
+# direnv
+.direnv
+
+# pre-commit
+.pre-commit-config.yaml
+
+# Emacs backup files
+*~
+\#*\#
+.\#*
+
+# Vim files
+*.swp
+*.swo
+*~
+
+# VS Code
+.vscode/
+*.code-workspace
+
+# JetBrains IDEs
+.idea/
+*.iml
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Linux
+*~
+
+# Temporary files
+*.tmp
+*.temp
+*.log
+
+# OS generated files
+.Spotlight-V100
+.Trashes
+._*

Cargo.lock

@@ -415,7 +415,7 @@ dependencies = [
 
 [[package]]
 name = "georm"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "georm-macros",
  "rand 0.9.0",
@@ -424,7 +424,7 @@ dependencies = [
 
 [[package]]
 name = "georm-macros"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "deluxe",
  "proc-macro2",

README.md

@@ -628,29 +628,31 @@ bacon test
 bacon doc
 ```
 
-#### Nix Development Environment (Optional)
+#### Devenv Development Environment (Optional)
 
-If you use [Nix](https://nixos.org/), you can use the provided flake for a reproducible development environment:
+If you use [Nix](https://nixos.org/), you can use the provided devenv configuration for a reproducible development environment:
 
 ```bash
 # Enter the development shell with all tools pre-installed
-nix develop
+devenv shell
 
 # Or use direnv for automatic environment activation
 direnv allow
 ```
 
-The Nix flake provides:
+The devenv configuration provides:
 - Exact Rust version (1.81) with required components
 - All development tools (just, cargo-deny, sqlx-cli, bacon)
 - LSP support (rust-analyzer)
 - SQL tooling (sqls for SQL language server)
+- PostgreSQL database for development
 
-**Nix flake contents:**
+**Devenv configuration:**
 - **Rust toolchain**: Specified version with rustfmt, clippy, and rust-analyzer
 - **Development tools**: just, cargo-deny, sqlx-cli, bacon
 - **SQL tools**: sqls (SQL language server)
-- **Platform support**: Currently x86_64-linux (can be extended)
+- **Database**: PostgreSQL with automatic setup
+- **Platform support**: Cross-platform (Linux, macOS, etc.)
 
 #### Database Setup for Tests
 

devenv.lock

@@ -0,0 +1,123 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1749054588,
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "b6be42d9e6f6053be1d180e4a4fb95e0aa9a8424",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1747046372,
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "9100a0f413b0c601e0533d1d94ffd501ce2e7885",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1747372754,
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "80479b6ec16fefd9c1db3ea13aeb038c60530f46",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1746807397,
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "c5208b594838ea8e6cca5997fbf784b7cca1ca90",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "git-hooks": "git-hooks",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": [
+          "git-hooks"
+        ],
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749091064,
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "12419593ce78f2e8e1e89a373c6515885e218acb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

devenv.nix

@@ -0,0 +1,36 @@
+{ pkgs, nixpkgs, rust-overlay, ... }:
+let
+  overlays = [ (import rust-overlay) ];
+  system = pkgs.stdenv.system;
+  rustPkgs = import nixpkgs { inherit system overlays; };
+  rustVersion = (rustPkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml);
+in {
+  dotenv.enable = true;
+
+  packages = with rustPkgs; [
+    bacon
+    cargo-deny
+    just
+    postgresql
+    sqls
+    sqlx-cli
+    (rustVersion.override {
+      extensions = [
+        "rust-src"
+        "rustfmt"
+        "clippy"
+        "rust-analyzer"
+      ];
+    })
+  ];
+
+  services.postgres = {
+    enable = true;
+    listen_addresses = "localhost";
+    initialScript = ''
+      CREATE USER georm WITH PASSWORD 'georm' SUPERUSER;
+      CREATE DATABASE georm OWNER georm;
+      GRANT ALL PRIVILEGES ON DATABASE georm TO georm;
+    '';
+  };
+}

devenv.yaml

@@ -0,0 +1,8 @@
+inputs:
+  rust-overlay:
+    url: github:oxalica/rust-overlay
+    inputs:
+      nixpkgs:
+        follows: nixpkgs
+  nixpkgs:
+    url: github:cachix/devenv-nixpkgs/rolling

docker/compose.dev.yml

@@ -1,33 +0,0 @@
-services:
-  db:
-    image: postgres:16-alpine
-    restart: unless-stopped
-    container_name: georm-backend-db
-    environment:
-      POSTGRES_PASSWORD: georm
-      POSTGRES_USER: georm
-      POSTGRES_DB: georm
-    ports:
-      - 127.0.0.1:5432:5432
-    volumes:
-      - georm_backend_db_data:/var/lib/postgresql/data
-
-  pgadmin:
-    image: dpage/pgadmin4:8
-    restart: unless-stopped
-    container_name: georm-backend-pgadmin
-    environment:
-      PGADMIN_DEFAULT_EMAIL: admin@example.com
-      PGADMIN_DEFAULT_PASSWORD: password
-      PGADMIN_DISABLE_POSTFIX: true
-      PGADMIN_CONFIG_SERVER_MODE: 'False'
-    ports:
-      - 127.0.0.1:8080:80
-    volumes:
-      - georm_backend_pgadmin_data:/var/lib/pgadmin
-    depends_on:
-      - db
-
-volumes:
-  georm_backend_db_data:
-  georm_backend_pgadmin_data:

docker/mod.just

@@ -1,14 +0,0 @@
-default: start
-
-start:
-        docker compose -f compose.dev.yml up -d
-
-stop:
-        docker compose -f compose.dev.yml down
-
-logs:
-        docker compose -f compose.dev.yml logs -f
-
-## Local Variables:
-## mode: makefile
-## End:

flake.lock

@@ -1,96 +0,0 @@
-{
-  "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1738142207,
-        "narHash": "sha256-NGqpVVxNAHwIicXpgaVqJEJWeyqzoQJ9oc8lnK9+WC4=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "9d3ae807ebd2981d593cddd0080856873139aa40",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1736320768,
-        "narHash": "sha256-nIYdTAiKIGnFNugbomgBJR+Xv5F1ZQU+HfaBqJKroC0=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "4bc9c909d9ac828a039f288cf872d16d38185db8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "rust-overlay": "rust-overlay"
-      }
-    },
-    "rust-overlay": {
-      "inputs": {
-        "nixpkgs": "nixpkgs_2"
-      },
-      "locked": {
-        "lastModified": 1738290352,
-        "narHash": "sha256-YKOHUmc0Clm4tMV8grnxYL4IIwtjTayoq/3nqk0QM7k=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "b031b584125d33d23a0182f91ddbaf3ab4880236",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

flake.nix

@@ -1,37 +0,0 @@
-{
-  description = "Georm, a simple, opiniated SQLx ORM for PostgreSQL";
-
-  inputs = {
-    nixpkgs.url      = "github:nixos/nixpkgs/nixos-unstable";
-    flake-utils.url  = "github:numtide/flake-utils";
-    rust-overlay.url = "github:oxalica/rust-overlay";
-  };
-
-  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
-    flake-utils.lib.eachSystem ["x86_64-linux"] (system:
-      let
-        overlays = [ (import rust-overlay) ];
-        pkgs = import nixpkgs { inherit system overlays; };
-        rustVersion = (pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml);
-      in {
-        devShell = with pkgs; mkShell {
-          buildInputs = [
-            bacon
-            cargo
-            cargo-deny
-            just
-            rust-analyzer
-            (rustVersion.override {
-              extensions = [
-                "rust-src"
-                "rustfmt"
-                "clippy"
-                "rust-analyzer"
-              ];
-            })
-            sqls
-            sqlx-cli
-          ];
-        };
-      });
-}

justfile

@@ -1,5 +1,3 @@
-mod docker
-
 default: lint
 
 clean: