[core] Improve error message when GNU tar is missing#17179
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This has led to numerous reported issues in the past. Spacemacs can work without GNU tar, because quelpa installation only fails for some packages; so it should suffice to add the message in that case. Also, remove the superfluous quote from the condition name error.
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| (when (and (equal err '(wrong-type-argument package-desc nil)) | ||
| (and (listp location) (eq 'recipe (car location))) | ||
| (boundp 'quelpa--tar-type) | ||
| (not (eq quelpa--tar-type 'gnu))) |
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This does not cover the case where (quelpa--tar-type) evaluates to gnu because of the fallback:
(defun quelpa--tar-type ()
"Return `bsd' or `gnu' depending on type of Tar executable.
Tests and sets variable `quelpa--tar-type' if not already set."
(or quelpa--tar-type
(when (and quelpa-build-tar-executable
(file-executable-p quelpa-build-tar-executable))
(setq quelpa--tar-type
(let ((v (shell-command-to-string
(format "%s --version" quelpa-build-tar-executable))))
(cond ((string-match-p "bsdtar" v) 'bsd)
((string-match-p "GNU tar" v) 'gnu)
(t 'gnu)))))))Not sure how common this case is. Perhaps we would need to duplicate a part of this function's implementation to cover this case.
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If I remember correctly, the issues have all been with bsdtar which is installed on MacOS, right? AFAICT that will actually print bsdtar so the fallback should not happen in that scenario at least:
$ /usr/bin/tar --version
bsdtar 3.5.3 - libarchive 3.7.4 zlib/1.2.12 liblzma/5.4.3 bz2lib/1.0.8
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If I remember correctly, the issues have all been with bsdtar which is installed on MacOS, right?
This should be the most common case. Though on OpenBSD, apparently the default tar does not support the --version flag at all. There was also an issue on Android, but I'm not sure if having a default "non-gnu" tar installed there is common.
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This has led to numerous reported issues in the past. Spacemacs can work without GNU tar, because quelpa installation only fails for some packages; so it should suffice to add the message in that case.