posit-dev / posit-dev/mcp-repl

Make interpreter selection easier and more configurable

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Dominant language
Rust
Stars
70
Forks
5
PR merge metrics
No merged PRs in 30d

Description

Selecting the Python interpreter should be easier.

mcp-repl should expose an environment variable for choosing the Python interpreter explicitly, for example MCP_REPL_PYTHON, consulted at launch. That should make it easier to use mcp-repl with other environment managers such as pixi or conda.

It would also help to expose interpreter search paths in a future configuration layer, so users can add default locations to search instead of relying only on .venv/bin/python.

Relatedly, --interpreter should be able to accept an absolute path to an R or Python executable, not only the literal r or python backend names.

Source: https://github.com/posit-dev/mcp-repl/issues/28

Contributor guide

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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 tracing how mcp-repl selects interpreters at launch and how the --interpreter argument is handled; the issue names no files or tests. Compare the requested environment variable, absolute executable paths, and configurable search paths, then verify that Python and R interpreter selection works with those inputs.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, r, rust
Domain
cli, developer-experience
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
48/100

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