Install meson.exe as the entrypoint on Windows

Thanks to Rafael Rivera for the suggestion

Fixes https://github.com/mesonbuild/meson/issues/1877

mesonbuild/mesonmain.py

@@ -232,15 +232,17 @@ def run_script_command(args):
     return cmdfunc(cmdargs)
 
 def set_meson_command(mainfile):
-    if mainfile.endswith('.exe'):
+    # On UNIX-like systems `meson` is a Python script
+    # On Windows `meson` and `meson.exe` are wrapper exes
+    if not mainfile.endswith('.py'):
         mesonlib.meson_command = [mainfile]
     elif os.path.isabs(mainfile) and mainfile.endswith('mesonmain.py'):
         # Can't actually run meson with an absolute path to mesonmain.py, it must be run as -m mesonbuild.mesonmain
         mesonlib.meson_command = mesonlib.python_command + ['-m', 'mesonbuild.mesonmain']
     else:
+        # Either run uninstalled, or full path to meson-script.py
         mesonlib.meson_command = mesonlib.python_command + [mainfile]
-    # This won't go into the log file because it's not initialized yet, and we
-    # need this value for unit tests.
+    # We print this value for unit tests.
     if 'MESON_COMMAND_TESTS' in os.environ:
         mlog.log('meson_command is {!r}'.format(mesonlib.meson_command))
 

run_meson_command_tests.py

@@ -135,25 +135,15 @@ class CommandTests(unittest.TestCase):
         self.assertTrue(bindir.is_dir())
         # Run `meson`
         os.chdir('/')
-        if is_windows():
-            resolved_meson_command = python_command + [str(bindir / 'meson.py')]
-        else:
-            resolved_meson_command = python_command + [str(bindir / 'meson')]
-            # The python configuration on appveyor does not register .py as
-            # a valid extension, so we cannot run `meson` on Windows.
-            builddir = str(self.tmpdir / 'build1')
-            meson_setup = ['meson', 'setup']
-            meson_command = meson_setup + self.meson_args
-            stdo = self._run(meson_command + [self.testdir, builddir])
-            self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
+        resolved_meson_command = [str(bindir / 'meson')]
+        builddir = str(self.tmpdir / 'build1')
+        meson_setup = ['meson', 'setup']
+        meson_command = meson_setup + self.meson_args
+        stdo = self._run(meson_command + [self.testdir, builddir])
+        self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
         # Run `/path/to/meson`
         builddir = str(self.tmpdir / 'build2')
-        if is_windows():
-            # Cannot run .py directly because of the appveyor configuration,
-            # and the script is named meson.py, not meson
-            meson_setup = python_command + [str(bindir / 'meson.py'), 'setup']
-        else:
-            meson_setup = [str(bindir / 'meson'), 'setup']
+        meson_setup = [str(bindir / 'meson'), 'setup']
         meson_command = meson_setup + self.meson_args
         stdo = self._run(meson_command + [self.testdir, builddir])
         self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
@@ -168,7 +158,7 @@ class CommandTests(unittest.TestCase):
             # Next part requires a shell
             return
         # `meson` is a wrapper to `meson.real`
-        resolved_meson_command = python_command + [str(bindir / 'meson.real')]
+        resolved_meson_command = [str(bindir / 'meson.real')]
         builddir = str(self.tmpdir / 'build4')
         (bindir / 'meson').rename(bindir / 'meson.real')
         wrapper = (bindir / 'meson')

setup.py

@@ -56,6 +56,13 @@ class install_scripts(orig):
             self.copy_file(in_built, outfile)
             self.outfiles.append(outfile)
 
+entries = {}
+if sys.platform == 'win32':
+    # This will create Scripts/meson.exe and Scripts/meson-script.py
+    # Can't use this on all platforms because distutils doesn't support
+    # entry_points in setup()
+    entries = {'console_scripts': ['meson=mesonbuild.mesonmain:main']}
+
 setup(name='meson',
       version=version,
       description='A high performance build system',
@@ -73,6 +80,7 @@ setup(name='meson',
                 'mesonbuild.wrap'],
       scripts=['meson.py'],
       cmdclass={'install_scripts': install_scripts},
+      entry_points=entries,
       data_files=[('share/man/man1', ['man/meson.1']),
                   ('share/polkit-1/actions', ['data/com.mesonbuild.install.policy'])],
       classifiers=['Development Status :: 5 - Production/Stable',