From b45d7c590aabe938e0a2a11c157ab4f0c8e86988 Mon Sep 17 00:00:00 2001
From: Miro Hrončok <miro@hroncok.cz>
Date: Oct 22 2020 21:43:32 +0000
Subject: WIP: Allow multiple -e in %pyproject_buildrequires


---

diff --git a/macros.pyproject b/macros.pyproject
index b4652ab..41ba893 100644
--- a/macros.pyproject
+++ b/macros.pyproject
@@ -79,9 +79,18 @@ fi
 %default_toxenv py%{python3_version_nodots}
 %toxenv %{default_toxenv}
 
+%_construct_toxenv(rxte:) %{lua:
+cmd = rpm.expand(" %{?**}") -- mind the space
+toxenv = ""
+for env in string.gmatch(cmd, "%s%-e%s*(%S+)") do
+  toxenv = toxenv .. "," .. env
+end
+print(toxenv:sub(2)) -- drops the first ,
+}
+
 
 %pyproject_buildrequires(rxte:) %{expand:\\\
-%{-e:%{expand:%global toxenv %{-e*}}}
+%{-e:%{expand:%global toxenv %{_construct_toxenv %{?**}}}}
 echo 'python%{python3_pkgversion}-devel'
 echo 'python%{python3_pkgversion}dist(pip) >= 19'
 echo 'python%{python3_pkgversion}dist(packaging)'
diff --git a/pyproject_buildrequires.py b/pyproject_buildrequires.py
index 4946240..7b688d2 100644
--- a/pyproject_buildrequires.py
+++ b/pyproject_buildrequires.py
@@ -244,6 +244,7 @@ def parse_tox_requires_lines(lines):
 
 
 def generate_tox_requirements(toxenv, requirements):
+    toxenv = ','.join(toxenv)
     requirements.add('tox-current-env >= 0.0.3', source='tox itself')
     requirements.check(source='tox itself')
     with tempfile.NamedTemporaryFile('r') as deps, tempfile.NamedTemporaryFile('r') as extras:
@@ -297,7 +298,7 @@ def generate_requires(
     try:
         backend = get_backend(requirements)
         generate_build_requirements(backend, requirements)
-        if toxenv is not None:
+        if toxenv:
             include_runtime = True
             generate_tox_requirements(toxenv, requirements)
         if include_runtime:
@@ -315,8 +316,8 @@ def main(argv):
         help='Generate run-time requirements',
     )
     parser.add_argument(
-        '-e', '--toxenv', metavar='TOXENVS', default=None,
-        help=('specify tox environments'
+        '-e', '--toxenv', metavar='TOXENVS', action='append',
+        help=('specify tox environments (comma separated and/or repeated)'
               '(implies --tox)'),
     )
     parser.add_argument(
@@ -346,8 +347,9 @@ def main(argv):
 
     if args.tox:
         args.runtime = True
-        args.toxenv = (args.toxenv or os.getenv('RPM_TOXENV') or
-                       f'py{sys.version_info.major}{sys.version_info.minor}')
+        if not args.toxenv:
+            _default = f'py{sys.version_info.major}{sys.version_info.minor}'
+            args.toxenv = [os.getenv('RPM_TOXENV', _default)]
 
     if args.extras:
         args.runtime = True
diff --git a/pyproject_buildrequires_testcases.yaml b/pyproject_buildrequires_testcases.yaml
index 0f380f4..fb155ce 100644
--- a/pyproject_buildrequires_testcases.yaml
+++ b/pyproject_buildrequires_testcases.yaml
@@ -294,7 +294,8 @@ Tox dependencies:
     wheel: 1
     tox: 3.5.3
     tox-current-env: 0.0.3
-  toxenv: py3
+  toxenv:
+    - py3
   setup.py: |
     from setuptools import setup
     setup(
@@ -327,7 +328,8 @@ Tox extras:
     wheel: 1
     tox: 3.5.3
     tox-current-env: 0.0.3
-  toxenv: py3
+  toxenv:
+    - py3
   setup.py: |
     from setuptools import setup
     setup(