Support installation via polkit

data/com.mesonbuild.install.policy

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE policyconfig PUBLIC "-//freedesktop//DTD polkit Policy Configuration 1.0//EN"
+"http://www.freedesktop.org/software/polkit/policyconfig-1.dtd">
+<policyconfig>
+
+  <vendor>The Meson Build System</vendor>
+  <vendor_url>https://github.com/mesonbuild/meson</vendor_url>
+
+  <action id="com.mesonbuild.install.run">
+    <description>Install the given project via Meson</description>
+    <message>Authentication is required to install this project</message>
+    <icon_name>preferences-system</icon_name>
+    <defaults>
+      <allow_any>no</allow_any>
+      <allow_inactive>no</allow_inactive>
+      <allow_active>auth_admin_keep</allow_active>
+    </defaults>
+    <annotate key="org.freedesktop.policykit.exec.path">/usr/bin/python3</annotate>
+    <annotate key="org.freedesktop.policykit.exec.argv1">/usr/bin/meson</annotate>
+    <annotate key="org.freedesktop.policykit.exec.argv2">--internal</annotate>
+    <annotate key="org.freedesktop.policykit.exec.argv3">install</annotate>
+  </action>
+
+</policyconfig>

mesonbuild/scripts/meson_install.py

@@ -18,6 +18,7 @@ from glob import glob
 from . import depfixer
 from . import destdir_join
 from ..mesonlib import is_windows, Popen_safe
+from __main__ import __file__ as main_file
 
 install_log_file = None
 selinux_updates = []
@@ -221,23 +222,35 @@ def get_destdir_path(d, path):
         output = os.path.join(d.fullprefix, path)
     return output
 
-def do_install(datafilename):
+def do_install(log_dir, datafilename):
+    global install_log_file
+
     with open(datafilename, 'rb') as ifile:
         d = pickle.load(ifile)
     d.destdir = os.environ.get('DESTDIR', '')
     d.fullprefix = destdir_join(d.destdir, d.prefix)
 
+    if not os.access(d.fullprefix, os.W_OK) and shutil.which('pkexec') is not None:
+        os.execlp('pkexec', 'pkexec', sys.executable, main_file, *sys.argv[1:],
+                  os.getcwd())
+
     if d.install_umask is not None:
         os.umask(d.install_umask)
-    d.dirmaker = DirMaker()
-    with d.dirmaker:
-        install_subdirs(d) # Must be first, because it needs to delete the old subtree.
-        install_targets(d)
-        install_headers(d)
-        install_man(d)
-        install_data(d)
-        restore_selinux_contexts()
-        run_install_script(d)
+
+    with open(os.path.join(log_dir, 'install-log.txt'), 'w') as lf:
+        install_log_file = lf
+        append_to_log('# List of files installed by Meson')
+        append_to_log('# Does not contain files installed by custom scripts.')
+
+        d.dirmaker = DirMaker()
+        with d.dirmaker:
+            install_subdirs(d) # Must be first, because it needs to delete the old subtree.
+            install_targets(d)
+            install_headers(d)
+            install_man(d)
+            install_data(d)
+            restore_selinux_contexts()
+            run_install_script(d)
 
 def install_subdirs(d):
     for (src_dir, dst_dir, mode, exclude) in d.install_subdirs:
@@ -401,18 +414,15 @@ def install_targets(d):
                     raise
 
 def run(args):
-    global install_log_file
-    if len(args) != 1:
+    if len(args) != 1 and len(args) != 2:
         print('Installer script for Meson. Do not run on your own, mmm\'kay?')
         print('meson_install.py [install info file]')
     datafilename = args[0]
     private_dir = os.path.dirname(datafilename)
     log_dir = os.path.join(private_dir, '../meson-logs')
-    with open(os.path.join(log_dir, 'install-log.txt'), 'w') as lf:
-        install_log_file = lf
-        append_to_log('# List of files installed by Meson')
-        append_to_log('# Does not contain files installed by custom scripts.')
-        do_install(datafilename)
+    if len(args) == 2:
+        os.chdir(args[1])
+    do_install(log_dir, datafilename)
     install_log_file = None
     return 0
 

setup.py

@@ -81,7 +81,8 @@ setup(name='meson',
                                       'man/mesonconf.1',
                                       'man/mesonintrospect.1',
                                       'man/mesontest.1',
-                                      'man/wraptool.1'])],
+                                      'man/wraptool.1']),
+                  ('share/polkit-1/actions', ['data/com.mesonbuild.install.policy'])],
       classifiers=['Development Status :: 5 - Production/Stable',
                    'Environment :: Console',
                    'Intended Audience :: Developers',