Create dev environment with Nix

.gitignore

@@ -1,2 +1,2 @@
 **/.envrc
-**/shell.nix
+.direnv

flake.lock

@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1648297722,
+        "narHash": "sha256-W+qlPsiZd8F3XkzXOzAoR+mpFqzm3ekQkJNa+PIh1BQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "0f8662f1319ad6abf89b3380dd2722369fc51ade",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1648219316,
+        "narHash": "sha256-Ctij+dOi0ZZIfX5eMhgwugfvB+WZSrvVNAyAuANOsnQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "30d3d79b7d3607d56546dd2a6b49e156ba0ec634",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Basic flake template for setting up development shells";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = inputs@{ self, nixpkgs, ... }:
+    let systems = inputs.flake-utils.lib.defaultSystems;
+    in inputs.flake-utils.lib.eachSystem systems (system: {
+      devShell =
+        import ./shell.nix { pkgs = import nixpkgs { inherit system; }; };
+    });
+}

shell.nix

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+let
+  # See https://nixos.wiki/wiki/FAQ/Pinning_Nixpkgs for more information on pinning
+  nixpkgs = builtins.fetchTarball {
+    # Descriptive name to make the store path easier to identify
+    name = "nixpkgs-unstable-2020-11-07";
+    # Commit hash for nixos-unstable as of 2019-02-26
+    url = https://github.com/NixOS/nixpkgs/archive/c54c614000644ecf9b8f8e9c873cfa91d1c05bf1.tar.gz;
+    # Hash obtained using `nix-prefetch-url --unpack <url>`
+    sha256 = "19xmsj1dhq25arhsfx0sl3r1y0zgpzfwhybc5dsxr1szh71wz3xs";
+  };
+in
+{ pkgs ? import <nixpkgs> {} }:
+
+with pkgs;
+
+mkShell {
+  packages = [
+    python3
+    pyright
+    stow
+  ];
+}