Same issue as Usage of libraries [compile] app/main.c:14:10: fatal error: readline/readline.h: No such file or directory [compile] #include <readline/readline.h> [compile] ^~~~~~~~~~~~~~~~~~~~~ [compile] compilation terminated. [compile] Looks like your code failed to compile. [compile] …

Thanks a lot @andy1li , Should have checked the announcements.

Readline not found during remote compile

andy1li May 3, 2026, 11:49am 4

Hey @tenze21, you can update the buildpack version using the Codecrafters CLI.

Let me know if you still run into issues.

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