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.TH "PIP-LOCK" "1" "Aug 05, 2026" "26.2" "pip"
.SH NAME
pip-lock \- description of pip lock command
.SH DESCRIPTION
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EXPERIMENTAL \- Lock packages and their dependencies from:
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.IP \(bu 2
PyPI (and other indexes) using requirement specifiers.
.IP \(bu 2
VCS project urls.
.IP \(bu 2
Local project directories.
.IP \(bu 2
Local or remote source archives.
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.sp
pip also supports locking from \(dqrequirements files\(dq, which provide an easy
way to specify a whole environment to be installed.
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The generated lock file is only guaranteed to be valid for the current
python version and platform.

.SH USAGE
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.EX
python \-m pip lock [options] [\-e] <local project path> ...
python \-m pip lock [options] <requirement specifier> [package\-index\-options] ...
python \-m pip lock [options] \-r <requirements file> [package\-index\-options] ...
python \-m pip lock [options] <archive url/path> ...
.EE
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.SH OPTIONS
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.TP
.B \-o, \-\-output <path>
Lock file name (default=pylock.toml). Use \- for stdout.
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(environment variable: \fBPIP_OUTPUT\fP)
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.TP
.B \-r, \-\-requirement <file>
Install from the given requirements file. The file or URL can be in pip\(aqs requirements.txt format, or pylock.toml format. pylock.toml support is experimental. This option can be used multiple times.
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(environment variable: \fBPIP_REQUIREMENT\fP)
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.TP
.B \-\-requirements\-from\-script <file>
Install dependencies of the given script file as defined by PEP 723 inline metadata.
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(environment variable: \fBPIP_REQUIREMENTS_FROM_SCRIPT\fP)
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.TP
.B \-c, \-\-constraint <file>
Constrain versions using the given constraints file. This option can be used multiple times.
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(environment variable: \fBPIP_CONSTRAINT\fP)
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.TP
.B \-\-build\-constraint <file>
Constrain build dependencies using the given constraints file. This option can be used multiple times.
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(environment variable: \fBPIP_BUILD_CONSTRAINT\fP)
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.TP
.B \-\-no\-deps
Don\(aqt install package dependencies.
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(environment variable: \fBPIP_NO_DEPS\fP, \fBPIP_NO_DEPENDENCIES\fP)
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.TP
.B \-\-only\-deps
Take only the dependencies of the provided requirements into account, not the requirements themselves. Cannot be used in combination with \-\-no\-deps, \-\-group, \-\-requirement, or \-\-requirements\-from\-script. No user\-supplied requirements will be handled, even if they were dependencies of other user\-supplied requirements.
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(environment variable: \fBPIP_ONLY_DEPS\fP, \fBPIP_ONLY_DEPENDENCIES\fP)
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.TP
.B \-e, \-\-editable <path/url>
Install a project in editable mode (i.e. setuptools \(dqdevelop mode\(dq) from a local project path or a VCS url.
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(environment variable: \fBPIP_EDITABLE\fP)
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.B \-\-src <dir>
Directory to check out editable projects into. The default in a virtualenv is \(dq<venv path>/src\(dq. The default for global installs is \(dq<current dir>/src\(dq.
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(environment variable: \fBPIP_SRC\fP, \fBPIP_SOURCE\fP, \fBPIP_SOURCE_DIR\fP, \fBPIP_SOURCE_DIRECTORY\fP)
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.B \-\-ignore\-requires\-python
Ignore the Requires\-Python information.
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(environment variable: \fBPIP_IGNORE_REQUIRES_PYTHON\fP)
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.TP
.B \-\-no\-build\-isolation
Disable isolation when building a modern source distribution. Build dependencies specified by PEP 518 must be already installed if this option is used.
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(environment variable: \fBPIP_NO_BUILD_ISOLATION\fP)
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.B \-\-check\-build\-dependencies
Check the build dependencies.
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(environment variable: \fBPIP_CHECK_BUILD_DEPENDENCIES\fP)
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.TP
.B \-C, \-\-config\-settings <settings>
Configuration settings to be passed to the build backend. Settings take the form KEY=VALUE. Use multiple \-\-config\-settings options to pass multiple keys to the backend.
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(environment variable: \fBPIP_CONFIG_SETTINGS\fP)
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.TP
.B \-\-require\-hashes
Require a hash to check each requirement against, for repeatable installs. This option is implied when any package in a requirements file has a \-\-hash option.
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(environment variable: \fBPIP_REQUIRE_HASHES\fP)
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.B \-\-no\-require\-hashes
Do not automatically enable \-\-require\-hashes when encountering a requirement with hashes.
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(environment variable: \fBPIP_NO_REQUIRE_HASHES\fP)
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.B \-\-progress\-bar <progress_bar>
Specify whether the progress bar should be used. In \(aqauto\(aq mode, \-\-quiet will suppress all progress bars. [auto, on, off, raw] (default: auto)
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(environment variable: \fBPIP_PROGRESS_BAR\fP)
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.TP
.B \-\-group <[path:]group>
Install a named dependency\-group from a \(dqpyproject.toml\(dq file. If a path is given, the name of the file must be \(dqpyproject.toml\(dq. Defaults to using \(dqpyproject.toml\(dq in the current directory.
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(environment variable: \fBPIP_GROUP\fP)
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.B \-\-no\-clean
Don\(aqt clean up build directories.
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(environment variable: \fBPIP_NO_CLEAN\fP)
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.SH Author
pip developers
.SH Copyright
The pip developers
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