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SCALAR(1) Git Manual SCALAR(1)
NAME scalar - A tool for managing large Git repositories
SYNOPSIS scalar clone [--single-branch] [--branch <main-branch>] [--full-clone] <url> [<enlistment>] scalar list scalar register [<enlistment>] scalar unregister [<enlistment>] scalar run ( all | config | commit-graph | fetch | loose-objects | pack-files ) [<enlistment>] scalar reconfigure [ --all | <enlistment> ] scalar diagnose [<enlistment>] scalar delete <enlistment>

DESCRIPTION Scalar is a repository management tool that optimizes Git for use in large repositories. Scalar improves performance by configuring advanced Git settings, maintaining repositories in the background, and helping to reduce data sent across the network.
An important Scalar concept is the enlistment: this is the top-level directory of the project. It usually contains the subdirectory src/ which is a Git worktree. This encourages the separation between tracked files (inside src/) and untracked files, such as build artifacts (outside src/). When registering an existing Git worktree with Scalar whose name is not src, the enlistment will be identical to the worktree.
The scalar command implements various subcommands, and different options depending on the subcommand. With the exception of clone, list and reconfigure --all, all subcommands expect to be run in an enlistment.
The following options can be specified before the subcommand:
-C <directory> Before running the subcommand, change the working directory. This option imitates the same option of git(1).
-c <key>=<value> For the duration of running the specified subcommand, configure this setting. This option imitates the same option of git(1).
COMMANDS Clone clone [<options>] <url> [<enlistment>] Clones the specified repository, similar to git-clone(1). By default, only commit and tree objects are cloned. Once finished, the worktree is located at <enlistment>/src.
The sparse-checkout feature is enabled (except when run with --full-clone) and the only files present are those in the top-level directory. Use git sparse-checkout set to expand the set of directories you want to see, or git sparse-checkout disable to expand to all files (see git-sparse-checkout(1) for more details). You can explore the subdirectories outside your sparse-checkout by using git ls-tree HEAD[:<directory>]. either specified by the --branch option or the primary branch remote's HEAD points at.
Further fetches into the resulting repository will only update the remote-tracking branch for the branch this option was used for the initial cloning. If the HEAD at the remote did not point at any branch when --single-branch clone was made, no remote-tracking branch is created.
--[no-]full-clone A sparse-checkout is initialized by default. This behavior can be turned off via --full-clone.
List list List enlistments that are currently registered by Scalar. This subcommand does not need to be run inside an enlistment.
Register register [<enlistment>] Adds the enlistment's repository to the list of registered repositories and starts background maintenance. If <enlistment> is not provided, then the enlistment associated with the current working directory is registered.
Note: when this subcommand is called in a worktree that is called src/, its parent directory is considered to be the Scalar enlistment. If the worktree is not called src/, it itself will be considered to be the Scalar enlistment.
Unregister unregister [<enlistment>] Remove the specified repository from the list of repositories registered with Scalar and stop the scheduled background maintenance.
Run scalar run ( all | config | commit-graph | fetch | loose-objects | pack-files ) [<enlistment>] Run the given maintenance task (or all tasks, if all was specified). Except for all and config, this subcommand simply hands off to git-maintenance(1) (mapping fetch to prefetch and pack-files to incremental-repack).
These tasks are run automatically as part of the scheduled maintenance, as soon as the repository is registered with Scalar. It should therefore not be necessary to run this subcommand manually.
The config task is specific to Scalar and configures all those opinionated default settings that make Git work more efficiently with large repositories. As this task is run as part of scalar clone automatically, explicit invocations of this task are rarely needed.
Reconfigure After a Scalar upgrade, or when the configuration of a Scalar enlistment was somehow corrupted or changed by mistake, this subcommand allows to reconfigure the enlistment. the information gathered by this command, including logs and certain statistics describing the data shape of the current enlistment.
The output of this command is a .zip file that is written into a directory adjacent to the worktree in the src directory.
Delete delete <enlistment> This subcommand lets you delete an existing Scalar enlistment from your local file system, unregistering the repository.
SEE ALSO git-clone(1), git-maintenance(1).
GIT Part of the git(1) suite
Git 2.42.0 2023-08-21 SCALAR(1)