gi-docgen: backport fix to remove wheel dependency

gi-docgen/PKGBUILD

@@ -3,7 +3,7 @@
 _pyname=gi_docgen
 pkgname=gi-docgen
 pkgver=2024.1
-pkgrel=3
+pkgrel=4
 pkgdesc="Documentation generator for GObject-based libraries"
 url="https://gnome.pages.gitlab.gnome.org/gi-docgen/"
 msys2_repository_url="https://gitlab.gnome.org/GNOME/gi-docgen"
@@ -22,8 +22,16 @@ makedepends=(
   python-installer
   python-setuptools
 )
-source=("https://pypi.org/packages/source/${_pyname::1}/${_pyname}/${_pyname}-${pkgver}.tar.gz")
-sha256sums=('2a4a5569f91109777481aa71451751289227f7c2652cfac366184a41eb19c231')
+source=("https://pypi.org/packages/source/${_pyname::1}/${_pyname}/${_pyname}-${pkgver}.tar.gz"
+        "https://gitlab.gnome.org/GNOME/gi-docgen/-/commit/8b4996a85126d9f26d474c6578ae77f065bdb236.patch")
+sha256sums=('2a4a5569f91109777481aa71451751289227f7c2652cfac366184a41eb19c231'
+            '085740dac566ac6dff96fe31b939af93d8d0152db905e6cb856ac2e3c6edbfd7')
+
+prepare() {
+  cd "$_pyname-$pkgver"
+
+  patch -Np1 -i ../8b4996a85126d9f26d474c6578ae77f065bdb236.patch
+}
 
 build() {
   cd "$_pyname-$pkgver"