Un-vendor the fastentrypoints dependency.

The `fastentrypoints` dependency is used to make console scripts
faster, in the case where they are **not** installed as wheels.
If they are installed as wheels, the console scripts are faster
by default.
By specifying `fastentrypoints` as a build requirement in
`pyproject.toml`, we can ensure that it can be imported whenever
the package is installed through `pip`.
This incurs a slight overhead of having to install
`fastentrypoints` even when the package is installed as a wheel,
but we no longer have to vendor `fastentrypoints`.

MANIFEST.in

@@ -1,6 +1,5 @@
 include aiida/cmdline/templates/*.tpl
 include aiida/manage/backup/backup_info.json.tmpl
-include utils/fastentrypoints.py
 include setup.json
 include AUTHORS.txt
 include CHANGELOG.md

pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires = [ "setuptools>=40.8.0", "wheel", "reentry~=1.3",]
+requires = [ "setuptools>=40.8.0", "wheel", "reentry~=1.3", "fastentrypoints~=0.12",]
 build-backend = "setuptools.build_meta:__legacy__"

setup.py

@@ -13,7 +13,12 @@
 import os
 import sys
 
-from utils import fastentrypoints  # pylint: disable=unused-import
+try:
+    import fastentrypoints  # pylint: disable=unused-import
+except ImportError:
+    # This should only occur when building the package, i.e. when
+    # executing 'python setup.py sdist' or 'python setup.py bdist_wheel'
+    pass
 from setuptools import setup, find_packages
 
 if (sys.version_info.major, sys.version_info.minor) == (3, 5):

utils/dependency_management.py

@@ -177,7 +177,8 @@ def generate_pyproject_toml():
 
     pyproject = {
         'build-system': {
-            'requires': ['setuptools>=40.8.0', 'wheel', str(reentry_requirement)],
+            'requires': ['setuptools>=40.8.0', 'wheel',
+                         str(reentry_requirement), 'fastentrypoints~=0.12'],
             'build-backend': 'setuptools.build_meta:__legacy__',
         }
     }