add nix support

app.py

@@ -63,4 +63,6 @@ def supported_websites():
     return render_template('supported.html', sites=sites)
 
 if __name__ == '__main__':
-    app.run('localhost', 8080, debug=True, threaded=True)
+    from waitress import serve
+    serve(app, host='127.0.0.1', port=41011)
+    # app.run('localhost', 8080, debug=True, threaded=True)

nix/default.nix

@@ -0,0 +1 @@
+import ./shell.nix

nix/inputs.nix

@@ -0,0 +1,18 @@
+
+with builtins;
+let
+  lock = fromTOML (readFile ./lock.toml);
+in rec {
+  pkgs = import (builtins.fetchTarball {
+    name = "nixpkgs";
+    url = "https://github.com/nixos/nixpkgs/tarball/${lock.nixpkgs.rev}";
+    sha256 = "${lock.nixpkgs.sha256}";
+  }) { config = {}; overlays = []; };
+  mach-nix = import (builtins.fetchTarball {
+    url = "https://github.com/DavHau/mach-nix/tarball/${lock.mach-nix.rev}";
+    sha256 = lock.mach-nix.sha256;
+  }) {
+    python = "python39";
+    inherit pkgs;
+  };
+}

nix/lock.toml

@@ -0,0 +1,9 @@
+[mach-nix]
+ref = "master"
+rev = "65266b5cc867fec2cb6a25409dd7cd12251f6107"
+sha256 = "1zavy2d4nmb5c05gb91xgwc2gqqch0y6d1y7mwldxwyr3ja43q6l"
+
+[nixpkgs]
+ref = "554d2d8aa25b6e583575459c297ec23750adb6cb"
+rev = "554d2d8aa25b6e583575459c297ec23750adb6cb"
+sha256 = "01yfqslnkyrfb5yjfablhvw830iw0za3mab4n03a0ldyq5ac6wh1"

nix/python.nix

@@ -0,0 +1,5 @@
+
+with (import ./inputs.nix);
+mach-nix.mkPython {
+  requirements = builtins.readFile ./requirements.txt;
+}

nix/requirements.txt

@@ -0,0 +1,6 @@
+flask==2.1.0
+recipe-scrapers==14.13.0
+beautifulsoup4
+requests
+Gunicorn
+waitress

nix/shell.nix

@@ -0,0 +1,8 @@
+
+with (import ./inputs.nix);
+pkgs.mkShell {
+  buildInputs = [
+    (import ./python.nix)
+    mach-nix.mach-nix
+  ];
+}

requirements.txt

@@ -2,4 +2,5 @@ flask==2.1.0
 recipe-scrapers==14.13.0
 beautifulsoup4
 requests
-Gunicorn
+Gunicorn
+waitress

start.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env zsh
+
+# Prerequiste
+# nix shell github:DavHau/mach-nix
+# mach-nix env ./env -r requirements.txt
+# nix-shell ./env
+
+cd $0:h
+nix-shell ./nix --command "python app.py"