initialise devenv environment

.envrc

@@ -0,0 +1,3 @@
+source_url "https://raw.githubusercontent.com/cachix/devenv/d1f7b48e35e6dee421cfd0f51481d17f77586997/direnvrc" "sha256-YBzqskFZxmNb3kYVoKD9ZixoPXJh1C9ZvTLGFRkauZ0="
+
+use devenv

.gitignore

@@ -19,3 +19,14 @@ Cargo.lock
 result
 result-*
 
+
+# Devenv
+.devenv*
+devenv.local.nix
+
+# direnv
+.direnv
+
+# pre-commit
+.pre-commit-config.yaml
+

devenv.lock

@@ -0,0 +1,156 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1689785879,
+        "narHash": "sha256-ofTzITQUNKiA2RBE7hLChVguua4AoHrr1TSvQyTzQ6Q=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "e207a8ef9911eba7f9a5e7761e47dc532931d482",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1685518550,
+        "narHash": "sha256-o2d0KcvaXzTrPRIo0kOLV0/QXHhDQ5DTi+OxcjO8xqY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "a1720a10a6cfe8234c0e93907ffe81be440f4cef",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1660459072,
+        "narHash": "sha256-8DFJjXG8zqoONA1vXtgeKXy68KdJL5UaXR8NtVMUbx8=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1689752456,
+        "narHash": "sha256-VOChdECcEI8ixz8QY+YC4JaNEFwQd1V8bA0G4B28Ki0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7f256d7da238cb627ef189d56ed590739f42f13b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1685801374,
+        "narHash": "sha256-otaSUoFEMM+LjBI1XL/xGB5ao6IwnZOXc47qhIgJe8U=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c37ca420157f4abc31e26f436c1145f8951ff373",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1689668210,
+        "narHash": "sha256-XAATwDkaUxH958yXLs1lcEOmU6pSEIkatY3qjqk8X0E=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "eb433bff05b285258be76513add6f6c57b441775",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": "pre-commit-hooks"
+      }
+    },
+    "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
+}

devenv.nix

@@ -0,0 +1,31 @@
+{pkgs, ...}: {
+  # https://devenv.sh/packages/
+  packages = [pkgs.git];
+
+  # https://devenv.sh/languages/
+  languages = {
+    rust.enable = true;
+  };
+
+  # https://devenv.sh/integrations/difftastic/
+  difftastic.enable = true;
+
+  # https://devenv.sh/pre-commit-hooks/
+  pre-commit = {
+    hooks = {
+      alejandra.enable = true;
+      rustfmt.enable = true;
+      clippy.enable = true;
+      typos.enable = true;
+    };
+
+    settings = {
+      clippy = {
+        allFeatures = true;
+        denyWarnings = true;
+      };
+    };
+  };
+
+  # See full reference at https://devenv.sh/reference/options/
+}

devenv.yaml

@@ -0,0 +1,3 @@
+inputs:
+  nixpkgs:
+    url: github:NixOS/nixpkgs/nixpkgs-unstable