Allow quieting the output of pipenv run and .env loading. (#5006)

* Restore this message as stderr because it affects requirements.txt generation.

* Only load the dotenv file when its a real file and thus only print the message when its present.

* Add news fragment.

* Allow quieting the output of install and .env loading.

* Missed this spot in th test to convert back.

* Add news fragment for quiet run option.

news/4027.feature.rst

@@ -0,0 +1,2 @@
+It is now possible to silence the ``Loading .env environment variables`` message on ``pipenv run``
+with the ``--quiet`` flag or the `PIPENV_QUIET` environment variable.

pipenv/cli/command.py

@@ -410,7 +410,13 @@ def run(state, command, args):
     """Spawns a command installed into the virtualenv."""
     from ..core import do_run
     do_run(
-        state.project, command=command, args=args, three=state.three, python=state.python, pypi_mirror=state.pypi_mirror
+        state.project,
+        command=command,
+        args=args,
+        three=state.three,
+        python=state.python,
+        pypi_mirror=state.pypi_mirror,
+        quiet=state.quiet
     )
 
 
@@ -444,11 +450,6 @@ def run(state, command, args):
          " vulnerabilities database. Leave blank for scanning against a"
          " database that only updates once a month.",
 )
-@option(
-    "--quiet",
-    is_flag=True,
-    help="Quiet standard output, except vulnerability report."
-)
 @common_options
 @system_option
 @pass_state

pipenv/cli/options.py

@@ -408,6 +408,7 @@ def validate_pypi_mirror(ctx, param, value):
 def common_options(f):
     f = pypi_mirror_option(f)
     f = verbose_option(f)
+    f = quiet_option(f)
     f = clear_option(f)
     f = three_option(f)
     f = python_option(f)

pipenv/core.py

@@ -94,7 +94,7 @@ def do_clear(project):
         raise
 
 
-def load_dot_env(project, as_dict=False):
+def load_dot_env(project, as_dict=False, quiet=False):
     """Loads .env file into sys.environ."""
     if not project.s.PIPENV_DONT_LOAD_ENV:
         # If the project doesn't exist yet, check current directory for a .env file
@@ -115,7 +115,7 @@ def load_dot_env(project, as_dict=False):
             )
         if as_dict:
             return dotenv.dotenv_values(dotenv_file)
-        elif os.path.isfile(dotenv_file):
+        elif os.path.isfile(dotenv_file) and not quiet:
             click.echo(
                 crayons.normal(fix_utf8("Loading .env environment variables..."), bold=True),
                 err=True,
@@ -2442,7 +2442,7 @@ def do_run_posix(project, script, command, env):
     )
 
 
-def do_run(project, command, args, three=None, python=False, pypi_mirror=None):
+def do_run(project, command, args, three=None, python=False, pypi_mirror=None, quiet=False):
     """Attempt to run command either pulling from project or interpreting as executable.
 
     Args are appended to the command in [scripts] section of project if found.
@@ -2454,7 +2454,7 @@ def do_run(project, command, args, three=None, python=False, pypi_mirror=None):
         project, three=three, python=python, validate=False, pypi_mirror=pypi_mirror,
     )
 
-    load_dot_env(project)
+    load_dot_env(project, quiet=quiet)
     env = os.environ.copy()
     env.pop("PIP_SHIMS_BASE_MODULE", None)