Fix/issue 4850

setup.json

@@ -89,6 +89,7 @@
             "spglib~=1.14"
         ],
         "notebook": [
+            "jupyter-client~=6.1,<6.1.13",
             "jupyter~=1.0",
             "notebook~=6.1,>=6.1.5"
         ],
@@ -108,7 +109,7 @@
             "pytest~=6.0",
             "pytest-asyncio~=0.12",
             "pytest-timeout~=1.3",
-            "pytest-cov~=2.7",
+            "pytest-cov~=2.7,<2.11",
             "pytest-rerunfailures~=9.1,>=9.1.1",
             "pytest-benchmark~=3.2",
             "pympler~=0.9",

utils/dependency_management.py

@@ -399,6 +399,37 @@ def check_requirements(extras, github_annotate):  # pylint disable: too-many-loc
     click.secho("Requirements files appear to be in sync with specifications in 'setup.json'.", fg='green')
 
 
+@cli.command()
+@click.argument('extras', nargs=-1)
+@click.option('--format', 'fmt', type=click.Choice(['pip', 'pipfile']), default='pip')
+def show_requirements(extras, fmt):
+    """Show the installation requirements.
+
+    For example:
+
+        show-requirements --format=pipfile all
+
+    This will show all reqiurements including *all* extras in Pipfile format.
+    """
+
+    # Read the requirements from 'setup.json'
+    setup_cfg = _load_setup_cfg()
+
+    if 'all' in extras:
+        extras = list(setup_cfg['extras_require'])
+
+    to_install = {Requirement.parse(r) for r in setup_cfg['install_requires']}
+    for key in extras:
+        to_install.update(Requirement.parse(r) for r in setup_cfg['extras_require'][key])
+
+    if fmt == 'pip':
+        click.echo('\n'.join(sorted(map(str, to_install))))
+    elif fmt == 'pipfile':
+        click.echo('[packages]')
+        for requirement in sorted(to_install, key=str):
+            click.echo(f'{requirement.name} = "{requirement.specifier}"')
+
+
 @cli.command()
 @click.argument('extras', nargs=-1)
 def pip_install_extras(extras):