leanprover / leanprover/lean4

RFC: `lake init` should warn when run inside non-empty directory

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Lake P-medium RFC
Dominant language
Lean
Stars
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Forks
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Avg merge
1d 17h
Merged PRs (30d)
175

Description

Proposal

Right now, it is very easy to accidentally write lake init my-project instead of lake new my-project which will put a lot of file into whatevery directory you're currently in (for example projects/ folder).

I claim that wanting to run lake init in a non-empty directory is rare enough to justify asking Current directory is non-empty. Proceed creating a Lean package here? (Y/n) on the command line.

Impact

Add 👍 to issues you consider important. If others benefit from the changes in this proposal being added, please ask them to add 👍 to it.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the command-line handling for lake init and compare it with lake new, as described in the proposal. Check how directory contents are detected and how command-line prompts are tested. Done means lake init asks for confirmation in a non-empty directory while preserving the existing behavior for empty directories.

Written by the indexing model from the issue text.

Assessment

Domain
cli
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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