diff --git a/Lib/ensurepip/__init__.py b/Lib/ensurepip/__init__.py
index 545fce656fd6f5..e07fa388ce9036 100644
--- a/Lib/ensurepip/__init__.py
+++ b/Lib/ensurepip/__init__.py
@@ -59,12 +59,12 @@ def _disable_pip_configuration_settings():
os.environ['PIP_CONFIG_FILE'] = os.devnull
-def bootstrap(*, root=None, upgrade=False, user=False,
+def bootstrap(*, root=None, prefix=None, upgrade=False, user=False,
altinstall=False, default_pip=False,
verbosity=0):
"""
Bootstrap pip into the current Python installation (or the given root
- directory).
+ and prefix directory).
Note that calling this function will alter both sys.path and os.environ.
"""
@@ -122,6 +122,8 @@ def _bootstrap(*, root=None, upgrade=False, user=False,
args = ["install", "--no-index", "--find-links", tmpdir]
if root:
args += ["--root", root]
+ if prefix:
+ args += ["--prefix", prefix]
if upgrade:
args += ["--upgrade"]
if user:
@@ -193,6 +195,11 @@ def _main(argv=None):
default=None,
help="Install everything relative to this alternate root directory.",
)
+ parser.add_argument(
+ "--prefix",
+ default=None,
+ help="Install everything using this prefix.",
+ )
parser.add_argument(
"--altinstall",
action="store_true",
@@ -212,6 +219,7 @@ def _main(argv=None):
return _bootstrap(
root=args.root,
+ prefix=args.prefix,
upgrade=args.upgrade,
user=args.user,
verbosity=args.verbosity,
diff --git a/Makefile.pre.in b/Makefile.pre.in
index caa1d376485343..a5634e8b3dee68 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1188,7 +1188,7 @@ install: @FRAMEWORKINSTALLFIRST@ commoninstall bininstall maninstall @FRAMEWORKI
install|*) ensurepip="" ;; \
esac; \
$(RUNSHARED) $(PYTHON_FOR_BUILD) -m ensurepip \
- $$ensurepip --root=$(DESTDIR)/ ; \
+ $$ensurepip --root=$(DESTDIR)/ --prefix=$(prefix) ; \
fi
altinstall: commoninstall
@@ -1198,7 +1198,7 @@ altinstall: commoninstall
install|*) ensurepip="--altinstall" ;; \
esac; \
$(RUNSHARED) $(PYTHON_FOR_BUILD) -m ensurepip \
- $$ensurepip --root=$(DESTDIR)/ ; \
+ $$ensurepip --root=$(DESTDIR)/ --prefix=$(prefix) ; \
fi
commoninstall: check-clean-src @FRAMEWORKALTINSTALLFIRST@ \
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