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Registering a Package in a Subdirectory of a Repository

A Julia package is normally a git repository by itself. However, sometimes you may want to have multiple packages in one repository or the Julia package is only a part of a larger repository. In those cases you need to be able to register only a subdirectory of the repository. This is fully supported by LocalRegistry and partially supported by Julia 1.0-1.4, as explained in the following sections. Julia support will be improved with version 1.5.

Register

In order to register a package in a subdirectory of a repository you need to make the following preparations:

  • git clone the repository manually if you have not already done so. It does not matter where the repository is placed.
  • Pkg.develop the package by path. E.g.
pkg"develop /path/to/repository/path/to/package"

After this, register can be called as normal.

Julia support

In Julia 1.0-1.4, packages in subdirectories work as expected in the following contexts:

  • As dependencies to other packages.
  • Pkg.add by name from registry, e.g. pkg"add Package"
  • Pkg.add by name and version from registry, e.g. pkg"add Package@1.1.0"
  • Pkg.dev by path (using the full path to the subdirectory)

The following do not work properly or at all:

  • Pkg.add by path
  • Pkg.add by name and branch from registry, e.g. pkg"add Package#master"
  • Pkg.dev by name

This situation will be improved in Julia 1.5.