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Welcome to the 21st issue of TMPDIR Weekly, a newsletter covering Embedded Linux, IoT systems, and technology in general. Please pass it on to anyone else you think might be interested and send any tips or feedback to our forum or

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openssh recently dropped support for ssh-rsa, which is used by older systems running Dropbear. You'll need this workaround to ssh into them.

The Yoe Distribution has started using a recently added feature in Yocto/Openembedded that helps ensure offline builds will work. Now bitbake disables network access by default on all tasks except the do_fetch task. Fetching tasks are therefore the only place where network download is allowed by default. This has found several packages failing to build since they were silently downloading extra sources or other artifacts during compile or configure tasks. Most of the packages in core layers have already been adddressed. However, this can still be an issue for recipes using Go, where Go modules download content as well which may not be the invoked during do_fetch. This can be enabled for these recipes by adding the following in the compile task:

do_compile[network] = "1"

LLVM/Clang is now defaulting to use DWARF5 debug format, Yoe distro has been using DWARF5 since 2021, now this change is available upstream as well. More details are here.


Typora, an excellent Markdown editor, has reached 1.0!.

Some notes on SQLite and the author behind it -- definitely a storage technology you should consider for embedded/edge systems.

Interesting podcast where Ryan Dahl talks about Deno.

Quote for the week

All variation stems from design ... and the first design is never the simplest. -- Sandy Munro

Join our Discourse forum to discuss these or new topics. Find past issues of TMPDIR here. Listen to previous podcasts at

Thanks for reading!

Khem and Cliff