bug#81490: 32.0.50; wrong-type-argument internal to package-install

Mats Lidell [25/Jul  4:27pm +02] wrote:
> In Hyperbole we run a CI workflow in Github for Emacs 28.2, 29.4, 30.2 and master based on the docker images produced by https://github.com/Silex/docker-emacs. Hyperbole has a dynamic dependency on markdown-mode and installs it when needed in the CI workflow. That happens during test execution, ert tests.
>
> A week ago we changed the code and then we got into this problem. For the master build we get the backtrace below. The error seems to be related to a race condition. Sometimes it works but mostly it fails. Only master seems to have this problem. We have not seen this for 28.2, 29.4 and 30.2. Unfortunately I can't recreate the issue running docker locally using the same master image as in Github.
>
> As a workaround in the CI workflow we have for Emacs master (32.0.50) adviced package-install to retry with a one second delay if it signals wrong-type-argument. Then it works on the second attempt.
>
> Backtrace:
> ----------------------------------------------------------------------
>  signal((wrong-type-argument stringp nil))
>   package--with-response-buffer-1("https://elpa.nongnu.org/nongnu/" #f(compiled-function () #<bytecode 0x1e93d79faeaf8db2>) :file "markdown-mode-2.8.tar" :async nil :error-function #f(compiled-function () #<bytecode 0x18c000af2941>) :noerror nil)
>   package-install-from-archive(#s(package-desc :name markdown-mode :version (2 8) :summary "Major mode for Markdown-formatted text" :reqs (...) :kind tar :archive "nongnu" :dir nil :extras (... ... ... ... ...) :signed nil))
>   package-download-transaction((#s(package-desc :name markdown-mode :version (2 8) :summary "Major mode for Markdown-formatted text" :reqs (...) :kind tar :archive "nongnu" :dir nil :extras (... ... ... ... ...) :signed nil)))
>   package-install(markdown-mode)
>   hypb:package-el-install(markdown-mode)
>   [...]
> ----------------------------------------------------------------------

Thanks.  Adding Philip.

-- 
Sean Whitton