python3 missing at runtime (Nixpacks) | Railway | Page 1

cold loom Jun 27, 2025, 9:02 PM

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I'm using Nixpacks and added python3 to the nixPkgs in the setup phase. It looks like it's installed, but when my app runs, it still throws /bin/sh: 1: python3: not found. Any idea why python3 isn’t available at runtime, even though it's in the Nixpacks config?

[phases.setup]
nixPkgs = ["...", "python3"]

providers = ["...", "python"]

[start]
cmd = "PATH=$PATH:/root/.nix-profile/bin npm start"

spring falconBOT Jun 27, 2025, 9:02 PM

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Project ID: f7b6fd16-8627-49f4-a182-e772e0742600

cold loom Jun 27, 2025, 9:02 PM

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f7b6fd16-8627-49f4-a182-e772e0742600

gray pendantBOT Jun 27, 2025, 10:12 PM

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New reply sent from Help Station thread:

(There was an issue in my codebase that was causing the error, it has been fixed)

You're seeing this because this thread has been automatically linked to the Help Station thread.

warm hawk Jun 27, 2025, 10:23 PM

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!s

#python3 missing at runtime (Nixpacks)