conan lock remove¶

$ conan lock remove -h
WARN: Downgrading cache from Conan 2.2.3 to 2.1.0
usage: conan lock remove [-h] [-v [V]] [-cc CORE_CONF] [--requires REQUIRES]
                         [--build-requires BUILD_REQUIRES]
                         [--python-requires PYTHON_REQUIRES]
                         [--lockfile-out LOCKFILE_OUT] [--lockfile LOCKFILE]

Remove requires, build-requires or python-requires from an existing or new
lockfile. References can be supplied with and without revisions like "--
requires=pkg/version",

options:
  -h, --help            show this help message and exit
  -v [V]                Level of detail of the output. Valid options from less
                        verbose to more verbose: -vquiet, -verror, -vwarning,
                        -vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
                        -vvv or -vtrace
  -cc CORE_CONF, --core-conf CORE_CONF
                        Global configuration for Conan
  --requires REQUIRES   Remove references to lockfile.
  --build-requires BUILD_REQUIRES
                        Remove build-requires from lockfile
  --python-requires PYTHON_REQUIRES
                        Remove python-requires from lockfile
  --lockfile-out LOCKFILE_OUT
                        Filename of the created lockfile
  --lockfile LOCKFILE   Filename of the input lockfile

The conan lock remove command is able to remove requires, build_requires or python_requires items from an existing lockfile.

For example, if we have the following conan.lock:

$ cat conan.lock
{
    "version": "0.5",
    "requires": [
        "math/1.0#85d927a4a067a531b1a9c7619522c015%1702683583.3411012",
        "engine/1.0#fd2b006646a54397c16a1478ac4111ac%1702683583.3544693"
    ],
    "build_requires": [
        "cmake/1.0#85d927a4a067a531b1a9c7619522c015%1702683583.3411012",
        "ninja/1.0#fd2b006646a54397c16a1478ac4111ac%1702683583.3544693"
    ],
    "python_requires": [
        "mytool/1.0#85d927a4a067a531b1a9c7619522c015%1702683583.3411012",
        "othertool/1.0#fd2b006646a54397c16a1478ac4111ac%1702683583.3544693"
    ]
}

The conan lock remove command:

$ conan lock remove --requires="math/*" --build-requires=cmake/1.0 --python-requires="*tool/*"

Will result in the following conan.lock:

$ cat conan.lock
{
    "version": "0.5",
    "requires": [
        "engine/1.0#fd2b006646a54397c16a1478ac4111ac%1702683583.3544693"
    ],
    "build_requires": [
        "ninja/1.0#fd2b006646a54397c16a1478ac4111ac%1702683583.3544693"
    ],
    "python_requires": [
    ]
}

It is possible to specify different patterns:

Remove by version-ranges with expressions like --requires="math/[>=1.0 <2]", and also
Remove a specific revision: --requires=math/1.0#revision
Remove locked dependencies for a given “team” user --requires=*/*@team*

The conan lock remove can be useful for:

In combination with conan lock add, it can be used to force the downgrade of a locked version to an older one. As conan lock add always adds and sorts the order, resulting in newer versions with high priority, it is not possible to force going back to an older version with just add. But first using conan lock remove, then conan lock add, it is possible to do so.
conan lock remove can unlock certain dependencies, resulting in an incomplete lockfile, that can be used with --lockfile-partial to resolve to the latest available versions for the unlocked dependencies, while keeping locked the rest.