Add yarn support. Fix #958

[0xMRTT]

Standards checklist:

• The PR title is descriptive.
• The code compiles (cargo build)
• The code passes rustfmt (cargo fmt)
• The code passes clippy (cargo clippy)
• The code passes tests (cargo test)
• Optional: I have tested the code myself
  • I also tested that Topgrade skips the step where needed

If you developed a feature or a bug fix for someone else and you do not have the
means to test it, please tag this person here.

Fix issue #958 from @nicks-passiert

[nicks-passiert]

Thank you @0xMRTT, can't wait to use it!

[r-darwish]

Is this reasonable to run both npm and yarn? Do they have different sets of installed packages?

[nicks-passiert]

For me it is enough if I can choose if I use npm or yarn. For me there are no use cases where I would run both at the same time.

[0xMRTT]

Okay, so we can add a new parameter to npm which is the path to the command for updating. By default it will be npm but you can change for yarn.

What do you think ?

[MCOfficer]

The alternative is to do what topgrade already does for things like nala/apt: If tool X is a drop-in replacement designed to replace tool Y, and tool X is installed, run X instead of Y. In this case, yarn instead of npm.

[0xMRTT]

The alternative is to do what topgrade already does for things like nala/apt: If tool X is a drop-in replacement designed to replace tool Y, and tool X is installed, run X instead of Y. In this case, yarn instead of npm.

But if you have yarn and npm, maybe you need to choose

[nicks-passiert]

Both would be for me good. Maybe it would be good to choose, to have a solution for the most users.

[nicks-passiert]

I tested it on MacOS and it works for me

[nicks-passiert]

What is to do, to get this done here?

[MCOfficer]

What is to do, to get this done here?

afaict roey is just gone for a bit. Gotta wait for them to come back.

[s34m]

Merged at new fork because of inactivity by maintainer.

[0xMRTT]

Oh, what about creating an org for that ?

[s34m]

Oh, what about creating an org for that ?

Will be done in the future, currently in the progress of just looking at current issues and PRs

[0xMRTT]

I'll be glad to help you

[s34m]

Oh, what about creating an org for that ?

Here it is: https://github.com/topgrade-rs/topgrade