gstreamer: 1.16.2 -> 1.18.0

Fixes #98769.

Important changes from https://gstreamer.freedesktop.org/releases/1.18/:

* `gst-validate` was renamed to `gst-devtools` upstream:

    > * the `gst-validate` tarball has been superseded by
    >   the `gst-devtools` tarball for consistency with the git module name.

* `gst-python` is now Python 3 only:

    > * Python 2.x is no longer supported

pkgs/development/libraries/gstreamer/ges/default.nix

@@ -1,11 +1,13 @@
 { stdenv
 , fetchurl
-, fetchpatch
 , meson
 , ninja
 , pkgconfig
 , python3
+, bash-completion
 , gst-plugins-base
+, gst-plugins-bad
+, gst-devtools
 , libxml2
 , flex
 , gettext
@@ -13,14 +15,18 @@
 }:
 
 stdenv.mkDerivation rec {
-  pname = "gstreamer-editing-services";
-  version = "1.16.2";
+  pname = "gst-editing-services";
+  version = "1.18.0";
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+    # "devdoc" # disabled until `hotdoc` is packaged in nixpkgs
+  ];
 
   src = fetchurl {
     url = "${meta.homepage}/src/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "05hcf3prna8ajjnqd53221gj9syarrrjbgvjcbhicv0c38csc1hf";
+    sha256 = "1a00f07v0yjqz1hydhgkjjarm4rk99yjicbz5wkfl5alhzag1bjd";
   };
 
   patches = [
@@ -33,26 +39,31 @@ stdenv.mkDerivation rec {
     pkgconfig
     gettext
     gobject-introspection
+    gst-devtools
     python3
     flex
+
+    # documentation
+    # TODO add hotdoc here
   ];
 
   buildInputs = [
+    bash-completion
     libxml2
   ];
 
   propagatedBuildInputs = [
     gst-plugins-base
+    gst-plugins-bad
   ];
 
   mesonFlags = [
-    "-Dgtk_doc=disabled"
+    "-Ddoc=disabled" # `hotdoc` not packaged in nixpkgs as of writing
   ];
 
   postPatch = ''
-    # for some reason, gst-plugins-bad cannot be found
-    # fortunately, they are only used by tests, which we do not run
-    sed -i -r -e 's/p(bad|good) = .*/p\1 = pbase/' tests/check/meson.build
+    patchShebangs \
+      scripts/extract-release-date-from-doap-file.py
   '';
 
   meta = with stdenv.lib; {