Library with invalid depends field causes silent failures

[per1234]

Bug Report

The MD_Parola library version 3.2.0 has a depends field in library.properties that contains a misspelled library name (https://github.com/MajicDesigns/MD_Parola/blob/v3.2.0/library.properties#L11). This causes arduino-cli lib deps and arduino-cli lib install to fail silently.

Current behavior

arduino-cli lib deps [email protected]

No dependencies are listed (normally MD_Parola would be listed even if there were no other dependencies defined).

arduino-cli lib install [email protected]

The library is not installed and no error message is displayed.

Expected behavior

Ignore invalid dependency names. Perhaps provide a warning message, but continue executing the command anyway.

Environment

• CLI version (output of arduino-cli version): 0.7.0-rc1 Commit: 49897ef
• OS and platform: Windows 10 64 bit, Ubuntu 19.04

Additional context

The Arduino IDE also displays undesirable behavior when installing [email protected]. I did not submit a separate report for that because I thought it might be resolved by fixing the issue in arduino-cli.