[gtk/wip/otte/build: 3/6] build: Remove sassc option

[Matthias Clasen <matthiasc src gnome org>]

commit 8857cd32c7fea5a88b7e543c5be4335fe9822954
Author: Benjamin Otte <otte redhat com>
Date:   Thu Apr 1 21:29:41 2021 +0200

    build: Remove sassc option
    
    Instead, ensure that sassc is made madatory on git builds (because
    it is, we don't ship CSS files anymore) and not even looked for in
    release builds (because do ship CSS files there).

 gtk/meson.build   | 30 ++++++++++++++++--------------
 meson.build       |  1 +
 meson_options.txt |  5 -----
 3 files changed, 17 insertions(+), 19 deletions(-)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index b42d793c86..bf108df11a 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -839,23 +839,25 @@ gtk_gresources_xml = configure_file(output: 'gtk.gresources.xml',
   ],
 )
 
-# Build the theme files
-sassc = find_program('sassc', required: false)
-if not sassc.found() and not get_option('sassc').disabled()
-  subproject('sassc')
-  sassc = find_program('sassc', required: get_option('sassc').enabled())
-endif
+theme_deps = []
+# For git checkouts, but not for tarballs...
+if not fs.exists('theme/Adwaita/Adwaita.css')
+  # ... build the theme files
+  sassc = find_program('sassc', required: false)
+  if not sassc.found()
+    subproject('sassc')
+    sassc = find_program('sassc', required: true)
+  endif
 
-if sassc.found()
-  sassc_opts = [ '-a', '-M', '-t', 'compact' ]
+  if sassc.found()
+    sassc_opts = [ '-a', '-M', '-t', 'compact' ]
 
-  subdir('theme/Default')
+    subdir('theme/Default')
 
-  theme_deps = [
-    default_theme_deps,
-  ]
-else
-  theme_deps = []
+    theme_deps += [
+      default_theme_deps,
+    ]
+  endif
 endif
 
 gtkresources = gnome.compile_resources('gtkresources',
diff --git a/meson.build b/meson.build
index 1b5740a53c..10665b855d 100644
--- a/meson.build
+++ b/meson.build
@@ -24,6 +24,7 @@ cloudproviders_req = '>= 0.3.1'
 xkbcommon_req      = '>= 0.2.0'
 sysprof_req        = '>= 3.38.0'
 
+fs = import('fs')
 gnome = import('gnome')
 pkg_config = import('pkgconfig')
 
diff --git a/meson_options.txt b/meson_options.txt
index 3a471a2025..29d1862031 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -78,11 +78,6 @@ option('colord',
        value: 'disabled',
        description : 'Build colord support for the CUPS printing backend')
 
-option('sassc',
-       type: 'feature',
-       value: 'auto',
-       description: 'Rebuild themes using sassc')
-
 option('f16c',
        type: 'feature',
        value: 'enabled',