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#+TITLE: JUST-MRRC
#+MAN_CLASS_OPTIONS: section-id=5
* NAME
just-mr configuration -- The format of the configuration used by *just-mr(1)*
* DESCRIPTION
The file is read as JSON. Any other serialization describing the
same JSON object is equivalent. We assume, that in JSON objects,
each key occurs at most once; it is implementation defined how
repetitions of the same key are treated.
** Location objects
A /location/ is a JSON object with the keys ~"root"~, ~"path"~, and ~"base"~.
The value for key ~"root"~ is either ~"workspace"~, ~"home"~, or ~"system"~,
which have the following meanings:
- ~"workspace"~ refers to the root of the workspace in which the ~just-mr~
invocation was issued (not the workspace of the requested main repository).
This location root is ignored if ~just-mr~ was not invoked from inside a
workspace.
- ~"home"~ refers to the user's home directory.
- ~"system"~ refers to the system root ~/~.
The value for key ~"path"~ is the relative path of the item to locate within
the location root.
The value for key ~"base"~ is a relative path within the location root. This
path is only relevant for locations of config files. If such a config file
contains relative paths, those will be resolved relative to the specified base.
If omitted, the default value ~.~ is used.
** The just-mrrc format
The just-mrrc is given by a JSON object.
- The value for the key ~"config lookup order"~ is a JSON list of location
objects, specifying where to look for multi-repository configurations (see
*just-mr-repository-config(5)* for more detail). The lookup is performed in
the same order the location objects appear in the list.
- The value for the key ~"local build root"~ is a single location object,
specifying the path to use as the local build root. For more details, see
*just-mr(1)*.
- The value for the key ~"checkout locations"~ is a single location object,
specifying the path to the file for checkout locations. For more details, see
*just-mr(1)*.
- The value for the key ~"distdirs"~ is a JSON list of location objects,
specifying where to look for distribution files (usually collected via the
subcommand ~fetch~). The lookup is performed in the same order the location
objects appear in the list. For more details, see *just-mr(1)*.
- The value for the key ~"just"~ is a single location object, specifying the
path to the ~just~ binary to use for execution, if ~just-mr~ is used as a
launcher.
- The value for the key ~"git"~ is a single location object, specifying the
path to the git binary to use in the instances when ~just-mr~ needs to shell
out.
- The value for the key ~"local launcher"~, if given, is list of
strings setting the default for local launcher for ~just-mr~;
command-line arguments take precedence over the value in the
configuration file. If the key ~"local launcher"~ is absent, the
default ~["env", "--"]~ is assumed.
- The value for the key ~"log limit"~, if given, sets the default
value for the log limit, that can be overridden by the command-line
options.
- The value ~"log files"~, if given, has to be a list of location
objects, specifying additional log files, on top of those specified
on the command line.
- The value for the key ~"just args"~ is a JSON object. Its keys are ~just~
subcommands and its value is a JSON list of strings. For the corresponding
subcommand, these strings are prefixed to the ~just~ argument vector, if
~just-mr~ is used as a launcher.
* EXAMPLE
An example just-mrrc file could look like the following:
#+BEGIN_SRC js
{ "config lookup order":
[ {"root": "workspace", "path": "repos.json"}
, {"root": "workspace", "path": "etc/repos.json"}
, {"root": "home", "path": ".just-repos.json"}
, {"root": "system", "path": "etc/just-repos.json"}
]
, "local build root": {"root": "home", "path": ".cache/just"}
, "checkout locations": {"root": "home", "path": ".just-local.json"}
, "local launcher": ["env", "--"]
, "log limit": 4
, "log files": [{"root": "home", "path": ".log/just/latest-invocation"}]
, "distdirs": [{"root": "home", "path": ".distfiles"}]
, "just": {"root": "system", "path": "usr/bin/just"}
, "git": {"root": "system", "path": "usr/bin/git"}
, "just args":
{ "build": ["-r", "10.0.0.1:8980", "--remote-execution-property", "OS:Linux"]
, "install": ["-r", "10.0.0.1:8980", "--remote-execution-property", "OS:Linux"]
, "rebuild": ["-r", "10.0.0.1:8980", "--remote-execution-property", "OS:Linux"]
, "install-cas": ["-r", "10.0.0.1:8980"]
}
}
#+END_SRC
* See also
*just-mr(1)*, *just-mr-repository-config(5)*
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