treewide: replace inkscape with inkscape_0

The Inkscape CLI interface has been changed with 1.x and packages
are not adjusted yet to this change. Let's use inkscape 0.x instead.

pkgs/data/themes/pop-gtk/default.nix

@@ -4,7 +4,7 @@
 , ninja
 , sassc
 , gtk3
-, inkscape
+, inkscape_0
 , optipng
 , gtk-engine-murrine
 , gdk-pixbuf
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     ninja
     sassc
     gtk3
-    inkscape
+    inkscape_0
     optipng
     python3
   ];
@@ -48,9 +48,9 @@ stdenv.mkDerivation rec {
     for file in $(find -name render-\*.sh); do
       substituteInPlace "$file" \
         --replace 'INKSCAPE="/usr/bin/inkscape"' \
-                  'INKSCAPE="inkscape"' \
+                  'INKSCAPE="${inkscape_0}/bin/inkscape"' \
         --replace 'OPTIPNG="/usr/bin/optipng"' \
-                  'OPTIPNG="optipng"'
+                  'OPTIPNG="${optipng}/bin/optipng"'
     done
   '';