conan lock create¶
$ conan lock create -h
usage: conan lock create [-h] [--out-file OUT_FILE] [-v [V]] [-cc CORE_CONF]
[--name NAME] [--version VERSION] [--user USER]
[--channel CHANNEL] [--requires REQUIRES]
[--tool-requires TOOL_REQUIRES] [-b BUILD]
[-r REMOTE | -nr] [-u [UPDATE]] [-pr PROFILE]
[-pr:b PROFILE_BUILD] [-pr:h PROFILE_HOST]
[-pr:a PROFILE_ALL] [-o OPTIONS] [-o:b OPTIONS_BUILD]
[-o:h OPTIONS_HOST] [-o:a OPTIONS_ALL] [-s SETTINGS]
[-s:b SETTINGS_BUILD] [-s:h SETTINGS_HOST]
[-s:a SETTINGS_ALL] [-c CONF] [-c:b CONF_BUILD]
[-c:h CONF_HOST] [-c:a CONF_ALL] [-l LOCKFILE]
[--lockfile-partial] [--lockfile-out LOCKFILE_OUT]
[--lockfile-clean]
[--lockfile-overrides LOCKFILE_OVERRIDES]
[--build-require]
[path]
Create a lockfile from a conanfile or a reference.
positional arguments:
path Path to a folder containing a recipe (conanfile.py or
conanfile.txt) or to a recipe file. e.g.,
./my_project/conanfile.txt. Defaults to the current
directory when no --requires or --tool-requires is
given
options:
-h, --help show this help message and exit
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-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
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
--name NAME Provide a package name if not specified in conanfile
--version VERSION Provide a package version if not specified in
conanfile
--user USER Provide a user if not specified in conanfile
--channel CHANNEL Provide a channel if not specified in conanfile
--requires REQUIRES Directly provide requires instead of a conanfile
--tool-requires TOOL_REQUIRES
Directly provide tool-requires instead of a conanfile
-b BUILD, --build BUILD
Optional, specify which packages to build from source.
Combining multiple '--build' options on one command
line is allowed. Possible values: --build=never
Disallow build for all packages, use binary packages
or fail if a binary package is not found, it cannot be
combined with other '--build' options. --build=missing
Build packages from source whose binary package is not
found. --build=cascade Build packages from source that
have at least one dependency being built from source.
--build=[pattern] Build packages from source whose
package reference matches the pattern. The pattern
uses 'fnmatch' style wildcards, so '--build="*"' will
build everything from source. --build=~[pattern]
Excluded packages, which will not be built from the
source, whose package reference matches the pattern.
The pattern uses 'fnmatch' style wildcards.
--build=missing:[pattern] Build from source if a
compatible binary does not exist, only for packages
matching pattern. --build=compatible:[pattern]
(Experimental) Build from source if a compatible
binary does not exist, and the requested package is
invalid, the closest package binary following the
defined compatibility policies (method and
compatibility.py)
-r REMOTE, --remote REMOTE
Look in the specified remote or remotes server
-nr, --no-remote Do not use remote, resolve exclusively in the cache
-u [UPDATE], --update [UPDATE]
Will install newer versions and/or revisions in the
local cache for the given reference name, or all
references in the graph if no argument is supplied.
When using version ranges, it will install the latest
version that satisfies the range. It will update to
the latest revision for the resolved version range.
-pr PROFILE, --profile PROFILE
Apply the specified profile. By default, or if
specifying -pr:h (--profile:host), it applies to the
host context. Use -pr:b (--profile:build) to specify
the build context, or -pr:a (--profile:all) to specify
both contexts at once
-pr:b PROFILE_BUILD, --profile:build PROFILE_BUILD
-pr:h PROFILE_HOST, --profile:host PROFILE_HOST
-pr:a PROFILE_ALL, --profile:all PROFILE_ALL
-o OPTIONS, --options OPTIONS
Apply the specified options. By default, or if
specifying -o:h (--options:host), it applies to the
host context. Use -o:b (--options:build) to specify
the build context, or -o:a (--options:all) to specify
both contexts at once. Example:
-o="pkg/*:with_qt=True"
-o:b OPTIONS_BUILD, --options:build OPTIONS_BUILD
-o:h OPTIONS_HOST, --options:host OPTIONS_HOST
-o:a OPTIONS_ALL, --options:all OPTIONS_ALL
-s SETTINGS, --settings SETTINGS
Apply the specified settings. By default, or if
specifying -s:h (--settings:host), it applies to the
host context. Use -s:b (--settings:build) to specify
the build context, or -s:a (--settings:all) to specify
both contexts at once. Example: -s="compiler=gcc"
-s:b SETTINGS_BUILD, --settings:build SETTINGS_BUILD
-s:h SETTINGS_HOST, --settings:host SETTINGS_HOST
-s:a SETTINGS_ALL, --settings:all SETTINGS_ALL
-c CONF, --conf CONF Apply the specified conf. By default, or if specifying
-c:h (--conf:host), it applies to the host context.
Use -c:b (--conf:build) to specify the build context,
or -c:a (--conf:all) to specify both contexts at once.
Example:
-c="tools.cmake.cmaketoolchain:generator=Xcode"
-c:b CONF_BUILD, --conf:build CONF_BUILD
-c:h CONF_HOST, --conf:host CONF_HOST
-c:a CONF_ALL, --conf:all CONF_ALL
-l LOCKFILE, --lockfile LOCKFILE
Path to a lockfile. Use --lockfile="" to avoid
automatic use of existing 'conan.lock' file
--lockfile-partial Do not raise an error if some dependency is not found
in lockfile
--lockfile-out LOCKFILE_OUT
Filename of the updated lockfile
--lockfile-clean Remove unused entries from the lockfile
--lockfile-overrides LOCKFILE_OVERRIDES
Overwrite lockfile overrides
--build-require Whether the provided reference is a build-require
conan lock create 命令会为 path 或 --requires 中指定的 Recipe 或引用创建一个 lockfile。该命令会计算依赖图，评估哪些二进制文件已存在或需要构建，但它不会尝试安装或从源代码构建这些二进制文件。在这方面，它等同于 conan graph info 命令。此命令接受的大部分参数与 conan graph info（以及 conan install、conan create）相同，因为 conan lock create 会为给定的配置创建或更新 lockfile。
可以从头开始创建一个 lockfile，从本地 conanfile 或 requires（例如，针对此 conanfile.txt）计算一个新的依赖图。
conanfile.txt¶
[requires]
fmt/9.0.0
[tool_requires]
cmake/3.23.5
我们可以运行
$ conan lock create .
$ cat conan.lock
{
"version": "0.5",
"requires": [
"fmt/9.0.0#ca4ae2047ef0ccd7d2210d8d91bd0e02%1675126491.773"
],
"build_requires": [
"cmake/3.23.5#5f184bc602682bcea668356d75e7563b%1676913225.027"
],
"python_requires": []
}
conan lock create 接受一个 --lockfile 输入 lockfile（如果找到默认的 conan.lock，它将被自动使用），然后它会在 --lockfile-out》（默认也是 conan.lock）中添加新信息。例如，如果我们更改上面的 conanfile.txt，移除 tool_requires，将 fmt 更新到 9.1.0，并添加对 zlib/1.2.13 的新依赖。
conanfile.txt¶
[requires]
fmt/9.1.0
zlib/1.2.13
[tool_requires]
我们将看到 conan lock create 如何扩展现有 lockfile 以包含新配置，但它不会从中删除未使用的版本或包。
$ conan lock create . # will use the existing conan.lock as base, and rewrite it
# use --lockfile and --lockfile-out to change that behavior
$ cat conan.lock
{
"version": "0.5",
"requires": [
"zlib/1.2.13#13c96f538b52e1600c40b88994de240f%1667396813.733",
"fmt/9.1.0#e747928f85b03f48aaf227ff897d9634%1675126490.952",
"fmt/9.0.0#ca4ae2047ef0ccd7d2210d8d91bd0e02%1675126491.773"
],
"build_requires": [
"cmake/3.23.5#5f184bc602682bcea668356d75e7563b%1676913225.027"
],
"python_requires": []
}
这种行为对于捕获可能具有不同依赖图的多种不同配置（Linux/Windows、shared/static、Debug/Release 等）非常重要。请参阅lockfiles 教程，了解有关多配置 lockfile 的更多信息。
如果我们想修剪未使用的版本和包，可以使用 --lockfile-clean 参数强制执行。
$ conan lock create . --lockfile-clean
# will use the existing conan.lock as base, and rewrite it, cleaning unused versions
$ cat conan.lock
{
"version": "0.5",
"requires": [
"zlib/1.2.13#13c96f538b52e1600c40b88994de240f%1667396813.733",
"fmt/9.1.0#e747928f85b03f48aaf227ff897d9634%1675126490.952"
],
"build_requires": [],
"python_requires": []
}
另请参阅
lockfiles 教程部分 包含更多 lockfiles 的示例和动手解释。