[needs websockets] Add development flake file (#620)

* Add development flake file

* use regular nixpkgs import

* Make vscode work and add .envrc

* add .direnv to the .gitignore file

4 files changed, 231 insertions, 0 deletions

diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..3550a30f
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
index 23e82275..2b0cc95e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -126,6 +126,7 @@ venv/
 ENV/
 env.bak/
 venv.bak/
+.direnv/
 
 # Spyder project settings
 .spyderproject
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..e4cebc16
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,175 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "poetry2nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1703863825,
+        "narHash": "sha256-rXwqjtwiGKJheXB43ybM8NwWB8rO2dSRrEqes0S7F5Y=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "5163432afc817cf8bd1f031418d1869e4c9d5547",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1714763106,
+        "narHash": "sha256-DrDHo74uTycfpAF+/qxZAMlP/Cpe04BVioJb6fdI0YY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e9be42459999a253a9f92559b1f5b72e1b44c13d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "poetry2nix": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": "systems_3",
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1714855626,
+        "narHash": "sha256-fqvhXqJVykGHr6OHJ2eLhmNr76vKYqrEnXErLJ5eUe8=",
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "rev": "c8766d12a9efd0467998b887d6de6d838091f2b9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "poetry2nix": "poetry2nix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "id": "systems",
+        "type": "indirect"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "poetry2nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1714058656,
+        "narHash": "sha256-Qv4RBm4LKuO4fNOfx9wl40W2rBbv5u5m+whxRYUMiaA=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "c6aaf729f34a36c445618580a9f95a48f5e4e03f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000..13567e97
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,54 @@
+{
+  description = "Decky development environment";
+  # pulls in the python deps from poetry
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    poetry2nix = {
+      url = "github:nix-community/poetry2nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        p2n = (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; });
+      in {
+        devShells.default = (p2n.mkPoetryEnv {
+          projectDir = self + "/backend";
+          # pyinstaller fails to compile so precompiled it is
+          overrides = p2n.overrides.withDefaults (final: prev: {
+            pyinstaller = prev.pyinstaller.override { preferWheel = true; };
+            pyright = null;
+          });
+        }).env.overrideAttrs (oldAttrs: {
+          shellHook = ''
+            set -o noclobber
+            PYTHONPATH=`which python`
+            FILE=.vscode/settings.json
+            if [ -f "$FILE" ]; then
+              echo "$FILE already exists, not writing interpreter path to it."
+            else
+              echo "{\"python.defaultInterpreterPath\": \"''${PYTHONPATH}\"}" > "$FILE"
+            fi
+          '';
+          buildInputs = with pkgs; [
+            nodejs_22
+            nodePackages.pnpm
+            poetry
+            # fixes local pyright not being able to see the pythonpath properly.
+            (pkgs.writeShellScriptBin "pyright" ''
+              ${pkgs.pyright}/bin/pyright --pythonpath `which python3` "$@" '')
+            (pkgs.writeShellScriptBin "pyright-langserver" ''
+              ${pkgs.pyright}/bin/pyright-langserver --pythonpath `which python3` "$@" '')
+            (pkgs.writeShellScriptBin "pyright-python" ''
+              ${pkgs.pyright}/bin/pyright-python --pythonpath `which python3` "$@" '')
+            (pkgs.writeShellScriptBin "pyright-python-langserver" ''
+              ${pkgs.pyright}/bin/pyright-python-langserver --pythonpath `which python3` "$@" '')
+          ];
+        });
+      });
+}