https://github.com/danhper/asdf-exec

Native command to run asdf shims
https://github.com/danhper/asdf-exec

Last synced: about 1 month ago
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Native command to run asdf shims

• Host: GitHub
• URL: https://github.com/danhper/asdf-exec
• Owner: danhper
• License: mit
• Created: 2019-05-17T19:50:09.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-08-30T13:55:48.000Z (over 1 year ago)
• Last Synced: 2024-08-03T13:05:17.458Z (5 months ago)
• Language: Go
• Homepage:
• Size: 27.3 KB
• Stars: 16
• Watchers: 4
• Forks: 4
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# asdf-exec

[![CircleCI](https://circleci.com/gh/danhper/asdf-exec.svg?style=svg)](https://circleci.com/gh/danhper/asdf-exec)

Experimental command to find and run executable used by [asdf][asdf] shims.

NOTE: This is not officially supported by asdf and requires to slightly

patch the asdf code

## Installation

I assume `asdf` is installed in `~/.asdf`. If not, please change the commands accordingly.

First, grab the `asdf-exec` executable from [the releases](https://github.com/danhper/asdf-exec/releases/)

and put it in `~/.asdf/bin/private` as `asdf-exec`

```

# for linux

wget https://github.com/danhper/asdf-exec/releases/download/v0.1.2/asdf-exec-linux-x64 -O ~/.asdf/bin/private/asdf-exec

# for macos

wget https://github.com/danhper/asdf-exec/releases/download/v0.1.2/asdf-exec-darwin-x64 -O ~/.asdf/bin/private/asdf-exec

# for both:

chmod +x ~/.asdf/bin/private/asdf-exec

```

Then, patch asdf reshim command code and regenerate all shims.

```

sed -i.bak -e 's|exec $(asdf_dir)/bin/asdf exec|exec $(asdf_dir)/bin/private/asdf-exec|' ~/.asdf/lib/commands/command-reshim.bash

rm ~/.asdf/shims/*

asdf reshim

```

## Rationale

As asdf is growing in features and complexity, the logic to run a single

command has become fairly involved and unfortunately quite slow.

For example

```

$ time python --version

Python 3.7.2

0.19user 0.04system 0:00.16elapsed 142%CPU (0avgtext+0avgdata 4344maxresident)k

0inputs+0outputs (0major+25175minor)pagefaults 0swaps

```

While there are surely many things we could do better with bash to improve

performance, tuning bash is quite tedious and error-prone.

I decided to give a native command a try. This would be called from shims

and would take care of locating the correct version.

Although this does results in quite a bit of duplication between the bash

code and this one, it does give a speed improvement which might be worth it.

```

$ time python --version

Python 3.7.2

0.00user 0.00system 0:00.01elapsed 100%CPU (0avgtext+0avgdata 4096maxresident)k

0inputs+0outputs (0major+691minor)pagefaults 0swaps

```

This is still totally experimental and there are no plan to merge or use this into

asdf for now, but please feel free to give it a try and let me know what you think.

[asdf]: https://github.com/asdf-vm/asdf