Allow specifying a dist-name that doesn't match the module name

doc/pkg_ini.rst

@@ -1,7 +1,7 @@
 The flit.ini config file
 ========================
 
-This file lives next to the module or package at :file:`{modulename}-pkg.ini`.
+This file lives next to the module or package.
 
 Metadata section
 ----------------
@@ -43,6 +43,9 @@ classifiers
 requires-python
   A version specifier for the versions of Python this requires, e.g. ``3`` or
   ``>=3.3``.
+dist-name
+  If you want your package's name on PyPI to be different from the importable
+  module name, set this to the PyPI name.
 keywords
   Space separated list of words to help with searching for your package.
 license

flit/inifile.py

@@ -18,7 +18,8 @@ class ConfigError(ValueError):
     'home-page',
     'license',
     'keywords',
-    'requires-python'
+    'requires-python',
+    'dist-name',
 } | metadata_list_fields
 
 metadata_required_fields = {
@@ -73,6 +74,10 @@ def read_pkg_ini(path):
     if 'requires' in md_dict:
         md_dict['requires_dist'] = md_dict.pop('requires')
 
+    # And what we call dist-name is name in the metadata
+    if 'dist_name' in md_dict:
+        md_dict['name'] = md_dict.pop('dist_name')
+
     if cp.has_section('scripts'):
         scripts_dict = {k: common.parse_entry_point(v) for k, v in cp['scripts'].items()}
     else:

tests/samples/altdistname.ini

@@ -0,0 +1,6 @@
+[metadata]
+module=package1
+author=Sir Robin
+author-email=robin@camelot.uk
+home-page=http://github.com/sirrobin/package1
+dist-name=packagedist1

tests/test_wheel.py

@@ -1,15 +1,29 @@
 import pathlib
+import shutil
 
 from testpath import assert_isfile
 
 from flit.wheel import WheelBuilder
 
 samples_dir = pathlib.Path(__file__).parent / 'samples'
 
+def clear_samples_dist():
+    try:
+        shutil.rmtree(str(samples_dir / 'dist'))
+    except FileNotFoundError:
+        pass
+
 def test_wheel_module():
+    clear_samples_dist()
     WheelBuilder(samples_dir / 'module1-pkg.ini').build()
     assert_isfile(str(samples_dir / 'dist/module1-0.1-py2.py3-none-any.whl'))
 
 def test_wheel_package():
+    clear_samples_dist()
     WheelBuilder(samples_dir / 'package1-pkg.ini').build()
     assert_isfile(str(samples_dir / 'dist/package1-0.1-py2.py3-none-any.whl'))
+
+def test_dist_name():
+    clear_samples_dist()
+    WheelBuilder(samples_dir / 'altdistname.ini').build()
+    assert_isfile(str(samples_dir / 'dist/packagedist1-0.1-py2.py3-none-any.whl'))