pyenv
Simple Python version management
Runssource: GitHubShellMITcommit fdb1dad0a45e
Shell, MIT licensed. The project labels itself: python and shell.
pyenv runs. An Argusic agent installed it in 3 minutes and hit no errors on a clean machine with no GPU, and the whole session was recorded.
pyenv 2.8.8 is checked out from git, the native realpath extension compiled successfully, and all 524 bats tests pass across core and plugin suites with zero failures.
What the agent ended up with on a clean machine, in its own words. How this is measured
Measured by Argusic on a fresh machine every time. Every number links to its evidence. Argusic Score 100 of 100 (the mean of this project's run scores).
At a glance
Subject data from GitHub, linked at the top of this page, refreshed . Test data by Argusic (CC BY 4.0); every number links to a run page with the full log, the recording, and their sha256 hashes.
What was measured
From the run that decided this verdict. Every line is a recorded value, not an estimate.
- Install time
- 3 minutes
- Cold machine to finish
- 6 minutes
- Errors hit and fixed
- 0 hit, 0 fixed with no human help
- How the result was proved
- make test-unit target (bats test/) exited 0 with 269/269 passing; make test-python-build (bats plugins/python-build/test/) exited 0 with 173/173 passing; make test-binary (bats plugins/pyenv-binary/test/) exited 0 with 76/76 passing; make test-link (bats plugins/pyenv-link/test/) exited 0 with 6/6 passing; pyenv --version returned 'pyenv 2.8.8'; pyenv version returned 'system'
- Model tokens used
- 45,211
- Exact commit tested
- fdb1dad0a45e
- Container image
- sha256:cdd920bce783
What was not measured
The other half, so you can see exactly how far this evidence goes. A gap is printed as a gap and never filled in.
- Peak GPU memory
- this ran on a CPU machine, so there was no GPU to sample
- Behaviour over a long run
- each attempt uses the smallest documented settings and a fixed time budget, so this measures whether it runs, not how it holds up under load
The end of the recording
The last lines of the terminal session that decided this verdict, exactly as they were recorded.
- pyenv-binary plugin: 76/76 pass - pyenv-link plugin: 6/6 pass - **Total: 524/524 pass** tokens used 45,211 All tests verified with zero failures across the board. Here's the final report: **Test results:** - Core tests: 269/269 pass - python-build plugin: 173/173 pass - pyenv-binary plugin: 76/76 pass - pyenv-link plugin: 6/6 pass - **Total: 524/524 pass**
Replay the whole session, every command from a clean machine to this point.
How it was tested
One agent, one container, no human help. It installs the project the way its own documentation says to, runs it, and fixes what breaks. Everything below is recorded as it happened: the terminal session, the log and the exact commit. The full method.
Strengths and limits
Measured facts, not opinions. How this is written.
What went well
- Reached a running state on a clean machine, with the session recorded.
- Installed in 3 minutes, faster than the median of the 4 comparable projects Argusic has measured.
- Nothing broke on the way: zero errors between clone and running.
- Ran without a GPU, so it does not need one to start.
- Licensed MIT, as reported by its host.
What did not, or is not known
- Measured once so far. A single attempt shows it can run, not that it runs reliably.
Of the 5 python projects Argusic has installed and timed, pyenv was the 2nd fastest to reach a running state, and 5 of 5 reached one at all.
What it is a reasonable choice for
- Trying it on a laptop or a small server: it reached a running state without a GPU.
- A quick evaluation: it was running 3 minutes after the clone.
- Following its own README: the documented path worked with nothing to fix.
Run history
Topics (from GitHub)
Embed the badge
Markdown for the project README. It links back here; terms on the terms page.
[](https://argusic.com/subject/pyenv)Questions
- Does pyenv run?
- Yes. pyenv runs. Argusic installed and launched it on a clean machine in 3 minutes, hitting 0 errors on the way, and recorded the session.
- How did Argusic test pyenv?
- On a fresh, disposable machine, with every command recorded and the repository pinned at commit fdb1dad0a45e. One attempt is recorded, and the full method is on the methodology page.
- What did it cost to test pyenv?
- The run that produced this verdict cost $0.04: real compute and model cost, not a list price per million tokens. It is recorded on that run's page.
- How long does pyenv take to install?
- 3 minutes in the run that decided this verdict, from a clean machine to a running state. That is one measured attempt, not an average.
- Does pyenv need a GPU?
- Not to start. Argusic reached a running state on a machine with no GPU.
- What goes wrong when installing pyenv?
- Nothing did, in the recorded run: zero errors between clone and running.
- How does pyenv compare with the alternatives?
- Of the 5 python projects Argusic has installed and timed, pyenv was the 2nd fastest to reach a running state, and 5 of 5 reached one at all.
- Where is the evidence for pyenv?
- The recorded run is on this page, each linking to its full log and terminal recording, stored with a sha256 fingerprint so it cannot be quietly altered.