Build with nix

This also switches from the hacky vendor.sh script to managing the
dependencies with nix.

.gitignore

@@ -4,3 +4,4 @@
 /static/episodes/*
 /static/vendor/
 /vendor/
+/result*

common.py

@@ -46,7 +46,7 @@ def get_episode_info(name, format):
     return json.loads(
         run(
             [
-                "./vendor/ffprobe",
+                "ffprobe",
                 "-loglevel",
                 "error",
                 "-show_format",

encode.py

@@ -66,7 +66,7 @@ def encode_episode(podcast, episode, format):
             )
             ffmpeg_chapters += f"title={escaped_title}\n\n".encode("utf-8")
 
-        command = ["./vendor/ffmpeg", "-y", "-loglevel", "error"]
+        command = ["ffmpeg", "-y", "-loglevel", "error"]
         command.extend(["-i", infile])
         if not format in ["oga", "opus"]:
             command.extend(["-i", episode["poster"]])

flake.nix

@@ -4,25 +4,89 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system:
+  outputs = { self, nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem
+    (system:
       let
-      pkgs = import nixpkgs { inherit system; };
+        pkgs = import nixpkgs { inherit system; config.allowUnfree = true; };
       in
       rec {
-      devShell = pkgs.mkShell {
+        packages = {
-        buildInputs = with pkgs; [
+          bulma = pkgs.fetchzip {
-          nixops
+            url = "https://github.com/jgthms/bulma/releases/download/0.9.0/bulma-0.9.0.zip";
-          python38
+            sha256 = "sha256-FKWdkq6pRukCzR2IQ88OHlPkIJbeeEz7NdIWv44k8TM=";
-          python38Packages.mutagen
+          };
+
+          podlove-subscribe-button = pkgs.fetchzip {
+            url = "https://github.com/podlove/podlove-subscribe-button/releases/download/v17/podlove-subscribe-button-v17.zip";
+            sha256 = "sha256-N+lxzDpw2mNOg0i+pOFuvwNMi5Q7rZK4H9WEzf5/1us=";
+            stripRoot = false;
+          };
+
+          podlove-web-player = pkgs.fetchzip {
+            url = "https://registry.npmjs.org/@podlove/web-player/-/web-player-4.5.13.tgz";
+            sha256 = "sha256-U7REkg0FwBaMO25M4lHRRWcNNhgZPPjx/AR48usPqCU=";
+          };
+
+          schulischer-schabernack = pkgs.callPackage
+            ({ stdenv
+             , ffmpeg-full
+             , python3
+             , zola
+             }:
+              let
+                linkVendor = ''
+                  mkdir -p vendor static/vendor
+                  ln -sfT ${packages.bulma} vendor/bulma
+                  # !!! XXX hack
+                  # copying is required at least with interactive shell, because zola does not copy symlinks to output directory
+                  # to keep it up to date, it is removed before that
+                  rm -rf static/vendor/{podlove-subscribe-button,podlove-web-player}
+                  cp --reflink=auto --no-preserve=mode,ownership -rf ${packages.podlove-subscribe-button} static/vendor/podlove-subscribe-button
+                  cp --reflink=auto --no-preserve=mode,ownership -rf ${packages.podlove-web-player} static/vendor/podlove-web-player
+                '';
+              in
+              stdenv.mkDerivation {
+                name = "schulischer-schabernack";
+
+                src = self;
+
+                nativeBuildInputs = [
+                  (ffmpeg-full.override { nonfreeLicensing = true; fdkaacExtlib = true; })
+                  (python3.withPackages (ps: with ps; [ mutagen ]))
                   zola
-          unzip
-          wget
                 ];
 
+                postPatch = ''
+                  patchShebangs .
+                '';
+
+                configurePhase = ''
+                  runHook preConfigure
+                  ${linkVendor}
+                  runHook postConfigure
+                '';
+
+                buildPhase = ''
+                  runHook preBuild
+                  ./build.sh
+                  runHook postBuild
+                '';
+
+                installPhase = ''
+                  runHook preInstall
+                  cp -r public $out
+                  runHook postInstall
+                '';
+
                 shellHook = ''
+                  ${linkVendor}
                   export NIXOPS_DEPLOYMENT=schulischer-schabernack-hcloud
                   export NIX_PATH=nixpkgs=${nixpkgs}
                 '';
+              })
+            { };
         };
+
+        defaultPackage = packages.schulischer-schabernack;
       });
 }

vendor.sh

@@ -1,31 +0,0 @@
-#!/bin/sh
-set -e
-mkdir -p vendor
-cd vendor
-
-rm -rf bulma
-wget -nv -O bulma.zip "https://github.com/jgthms/bulma/releases/download/0.9.0/bulma-0.9.0.zip"
-unzip -q bulma.zip
-rm bulma.zip
-mv bulma-* bulma
-
-wget -Nnv \
-	"https://sbruder-cdn.s3.eu-central-1.wasabisys.com/ffmpeg-fdk/ffmpeg" \
-	"https://sbruder-cdn.s3.eu-central-1.wasabisys.com/ffmpeg-fdk/ffprobe"
-sha512sum -c << EOF
-29cc5a88d508781fc34ccafa8292c8505395c8a3a2231f71a49f5553176994f2118217f248ba03593464ee6e63c72e8bb1c630779fdac4a3e97925a4aca27836  ffmpeg
-bbe17d8b9489c0b5155c57fdc4fe4d7635d57ae98da9767229070210ab41099c4f2af50b42ad5a3283a75605ac9972c93bf8b6cdb00cf2333cc2adfd943ce5f0  ffprobe
-EOF
-chmod +x ffmpeg ffprobe
-
-mkdir -p ../static/vendor/
-cd ../static/vendor/
-
-rm -rf podlove-web-player
-mkdir podlove-web-player
-wget -nv -O- "https://registry.npmjs.org/@podlove/web-player/-/web-player-4.5.13.tgz" | tar xzf - --strip-components=1 -C podlove-web-player
-
-rm -rf podlove-subscribe-button
-wget -nv -O podlove-subscribe-button.zip "https://github.com/podlove/podlove-subscribe-button/releases/download/v17/podlove-subscribe-button-v17.zip"
-unzip -q -d podlove-subscribe-button  podlove-subscribe-button.zip
-rm podlove-subscribe-button.zip