dvm migrate

Import SDKs from the older cbracken/dvm layout, without re-downloading anything.

dvm migrate [--dry-run] [--clean]

Moves the SDKs an older cbracken/dvm install already downloaded into the layout this dvm uses. See Migrating from cbracken/dvm for the full walkthrough; this page is the command's reference.

Flags#

Flag	Effect
`--dry-run`	Print everything that would move and everything a later `--clean` would delete. Reports only.
`--clean`	Remove the older tool's own files, once its SDKs have been migrated. Always a step of its own.
`-y`, `--yes`	Answer yes to the questions this command would ask.

What it does#

Both tools live in ~/.dvm. The older one keeps its SDKs in ~/.dvm/darts/<version>, extracted, in exactly the shape this dvm keeps them in ~/.dvm/versions/<version>.

So migration is a move: several hundred megabytes of SDK you already have get relocated on disk rather than downloaded again.

dvm migrate

Found an older dvm (cbracken/dvm) in /Users/you/.dvm:
  darts/  scripts/  environments/

Moving 3 SDKs from darts/ to versions/...
  3.4.0  moved
  2.19.6 moved
  3.0.5  skipped: versions/3.0.5 already exists

2 SDKs moved. The older tool's own files are still here.
Remove them with: dvm migrate --clean

How your SDKs stay safe#

Those directories may be your only copy of those SDKs, so the command is built around keeping them:

the move happens before anything is deleted,
a version already present in versions/ is skipped, so what you have stays what you have,
a move is reported as done once the destination is verified,
deleting the older tool's own files is a separate --clean run that has to be asked for and then confirmed.

Run --dry-run first if you want to see the whole plan before anything moves.

`--clean`#

dvm migrate --clean

Removes the older tool's scripts/, environments/ and its git checkout. It asks for confirmation; --yes answers for you, for scripted use.

It is a separate step on purpose, so a migration that succeeded stays succeeded while the deletion waits for you.

On a machine with only this dvm#

Nothing to migrate: no older dvm (cbracken/dvm) install in /Users/you/.dvm.
That directory would have a scripts/dvm and a darts/ in it.

Exit code 0: there was nothing to do, and that is a success.