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sunken-ship: add numpy to mulbo-server env

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For FFT-based spectral-rolloff analysis (quality.py) used by the
chromaprint-dupe winner picker. Effective bitrate alone can't tell
a real lossless file from a re-encoded-128kbps-MP3-saved-as-WAV;
spectral rolloff catches the upsampled fakes (rolloff < 17kHz =
came from lossy source).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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DannyDannyDanny 2026-06-04 12:35:22 +02:00
parent 09d25a1899
commit dc7ef47681
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2
nixos/hosts/sunken-ship.nix
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@ -323,6 +323,8 @@
python-multipart
mutagen # tag writeback (enrich.write_tags); needed by the
# /enrich/revert endpoint which reuses enrich.py.
numpy # FFT for spectral-rolloff analysis (quality.py); used
# by chromaprint-dupe winner picker in --spectral mode.
]);
in {
description = "Mulbo companion service (uploads, dedup, folders)";