After installing one of the oldest Clang versions available (pre-5.0 on bionic, pre-9 on focal), any subsequent apt-get update will fail:
E: The repository 'http://apt.llvm.org/bionic llvm-toolchain-bionic-3.9 Release' does not have a Release file.
Error: Process completed with exit code 100.
It appears that these versions are not present on apt.llvm.org, even though they are in universe.
(setup-clang itself ignores this failure and carries on, though I'm not sure if this was intended on your part.)
It would be nice if the repo URL was checked first and omitted if missing. Or, failing that, a mention in the README advising running any apt-get updatebeforesetup-clang would help prevent some head-scratching. Thanks!
After installing one of the oldest Clang versions available (pre-5.0 on bionic, pre-9 on focal), any subsequent
apt-get updatewill fail:E: The repository 'http://apt.llvm.org/bionic llvm-toolchain-bionic-3.9 Release' does not have a Release file. Error: Process completed with exit code 100.
It appears that these versions are not present on apt.llvm.org, even though they are in
universe.(
setup-clangitself ignores this failure and carries on, though I'm not sure if this was intended on your part.)It would be nice if the repo URL was checked first and omitted if missing. Or, failing that, a mention in the README advising running any
apt-get updatebeforesetup-clangwould help prevent some head-scratching. Thanks!