Fix conditional syntax issue in macOS libusb check

[voronor]

Description:

This pull request addresses a minor but important syntax issue in the conditional statement used to check for the presence of libusb on macOS. Specifically, the original condition:

if [[ "$OSTYPE" =~ ^darwin ]] && [[ ! -f /usr/local/opt/libusb/lib/libusb-1.0.0.dylib && ! -f /opt/homebrew/opt/libusb/lib/libusb-1.0.0.dylib ]]; then

contains a logical expression within a single pair of square brackets [[ ... ]] that includes two independent checks joined by &&. This can potentially lead to incorrect interpretation or unexpected behavior.

Issue:

The [[ ... ]] syntax in bash doesn't support nested square brackets directly. The correct approach is to separate the two conditions into individual [[ ... ]] blocks for clarity and to ensure they are evaluated independently.

Fix:

The corrected version separates the conditions as follows:

if [[ "$OSTYPE" =~ ^darwin ]] && [[ ! -f /usr/local/opt/libusb/lib/libusb-1.0.0.dylib ]] && [[ ! -f /opt/homebrew/opt/libusb/lib/libusb-1.0.0.dylib ]]; then

Importance:

Without this fix, the script could potentially misbehave on macOS systems where libusb is missing. By splitting the conditions into distinct checks, we ensure that each path is evaluated correctly, preventing errors in the execution of the script.

Change Summary:

• Refactored the conditional logic checking the presence of libusb to ensure proper evaluation of separate conditions.

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Thank you for maintaining this project! Let me know if you need any further changes or clarification.

[grandizzy]

likely related #1528

[voronor]

likely related #1528

Completely different error. Read the description again.