v1.39.0

zaidmukaddam/scirav1.39.0Mar 6, 2026by Schniz

AI Summary

This release prioritizes performance and UX improvements for the shell tool, including faster startup times, enhanced hook robustness, and new utility flags.

Key Highlights

  • Shell startup is now faster as `fnm env` applies the initial version directly.
  • Improved `--use-on-cd` shell hook robustness with zsh deduplication and Windows CMD fixes.
  • Added `fnm install --use` flag to automatically switch versions after installation.
  • Added `fnm default` command to return the current default version.

New Features

  • `fnm install --use` flag for automatic version switching.
  • `fnm default` command returning the current default version.
  • Optimized shell startup performance.

Full Release Notes

**Performance & UX Improvements:**
- Shell startup is now faster: `fnm env --use-on-cd` applies the initial version during `fnm env` itself, eliminating an extra `fnm use` subprocess
- Improved `--use-on-cd` shell hook robustness (zsh hook deduplication on re-source, Windows CMD fixes for paths with spaces and drive changes)

**New Features:**
- `fnm install --use` flag to automatically switch to the version after installing
- `fnm default` (with no arguments) now returns the current default version

**Internal:**
- Rust toolchain upgraded to 1.88

**Docs/Maintenance:**
- Various README improvements, typo fixes, and CI workflow fixes

**Thanks to the new contributors:** @SunsetTechuila, @MangelMaxime, @CodingWithAnxiety, @zeroberry, @isaacl :hat-tip: