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If 'which' is not installed, 'dafny' command surfaces incorrect error message #449

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lavaleri opened this issue Dec 3, 2019 · 0 comments · Fixed by #541
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If 'which' is not installed, 'dafny' command surfaces incorrect error message #449

lavaleri opened this issue Dec 3, 2019 · 0 comments · Fixed by #541

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@lavaleri
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lavaleri commented Dec 3, 2019

If running on a system which does no have which installed (This is common if running on AL2 images out of the box), then dafny gives the following misleading error message: "Error: Dafny requires Mono to run on non-Windows systems."

Instead, dafny should either surface a message about missing 'which', or dafny should use another method for determining if 'mono' is installed. (A quick google search shows some alternatives here: https://stackoverflow.com/questions/592620/how-to-check-if-a-program-exists-from-a-bash-script)
@fabianhauser fabianhauser mentioned this issue Feb 12, 2020
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RustanLeino pushed a commit that referenced this issue Feb 19, 2020
@fabianhauser
Replace "which" utility in launch bash scripts (#541)
28a2e83 
Uses the bash builtin "type" command.

Resolves #449
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Replace "which" utility in launch bash scripts
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@lavaleri