Fall back to USERNAME env var in Singularity scratch path - #459
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shitcoinsherpa wants to merge 1 commit into
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Fall back to USERNAME env var in Singularity scratch path#459shitcoinsherpa wants to merge 1 commit into
shitcoinsherpa wants to merge 1 commit into
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Windows sets USERNAME instead of USER. Without this fallback, the scratch directory path defaults to "hermes" instead of the actual username when running on Windows.
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Closing this — Singularity/Apptainer is a Linux/HPC container technology and won't be run on Windows. The |
This was referenced Jul 25, 2026
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Problem
The Singularity environment uses
os.getenv("USER", "hermes")to build the scratch directory path under/scratch. On Windows, the username is stored inUSERNAME, notUSER, so this always falls back to the hardcoded "hermes" default.Fix
Chain the fallback:
os.getenv("USER", os.getenv("USERNAME", "hermes")). This picks up the correct username on both Unix and Windows, and still falls back to "hermes" if neither is set.One-line change.