$ opam create . <compiler version> (1)Local Switches & Coswitches
A "local switch" is an OPAM switch whose name is a directory path;
this will often be the working directory ./ (which OPAM will expand
to an absolute path), but this is not a requirement. The switch itself
is located in the ./_opam subdirectory.
OPAM commands detect the presence of an _opam subdirectory in the
current directory and automatically set it as the current switch. This
means than any opam commands executed in that directory will apply
to that local switch.
OBazl can be configured to use an OPAM local switch as a project
coswitch. The first step is to create the switch:
| 1 | where <compiler version> is one of the version strings listed by
$ opam switch list-available, e.g. 4.14.0 or 4.14.0+options. |
This creates a switch named $(PWD) and located at
$(PWD)/_opam. To see the expanded switch name, run $ opam switch
show.
$ bazel run @opam//local
$ bazel run @opam//local:import
$ bazel run @opam//local:export
$ bazel run @opam//local:refresh