[meld] Update maint script to distribute with Meson

[Kai Willadsen <kaiw src gnome org>]

commit 5c10999b7ecb657ca3e0d25d5555693e29f86ae4
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Apr 19 10:54:44 2020 +1000

    Update maint script to distribute with Meson

 maint | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)
---
diff --git a/maint b/maint
old mode 100644
new mode 100755
index 772c1dc7..37c75af0
--- a/maint
+++ b/maint
@@ -486,12 +486,19 @@ def markdown(filename):
 
 @cli.command()
 def dist():
-    archive = '%s-%s.tar.bz2' % (meld.conf.__package__, meld.conf.__version__)
-    dist_archive_path = os.path.abspath(os.path.join('dist', archive))
-    if os.path.exists(dist_archive_path):
-        click.echo('Replacing %s...' % dist_archive_path)
-    cmd = ['python3', 'setup.py', 'sdist', '--formats=bztar']
+    build_dir = '_build'
+    archive = '%s-%s.tar.xz' % (meld.conf.__package__, meld.conf.__version__)
+    dist_archive_path = os.path.abspath(
+        os.path.join(build_dir, 'meson-dist', archive))
+
+    click.echo('Running meson...')
+    cmd = ['meson', build_dir]
+    call_with_output(cmd, echo_stdout=False)
+
+    click.echo('Creating distribution...')
+    cmd = ['ninja', '-C', build_dir, 'dist']
     call_with_output(cmd, echo_stdout=False)
+
     if not os.path.exists(dist_archive_path):
         click.echo('Failed to create archive file %s' % dist_archive_path)
         raise click.Abort()