pyenv install failure - workaround #17250

the-citto · 2025-05-05T12:59:35Z

the-citto
May 5, 2025

Port, board and/or hardware

none yet

MicroPython version

MicroPython-1.21.0, Arch Linux, pyenv

Reproduction

pyenv install micropython-1.21.0

fails

Expected behaviour

Downloading micropython-1.21.0.tar.xz...
-> https://micropython.org/resources/source/micropython-1.21.0.tar.xz
Installing micropython-1.21.0...
Installed micropython-1.21.0 to /home/<me>/.pyenv/versions/micropython-1.21.0

Observed behaviour

stdout:

Downloading micropython-1.21.0.tar.xz...
-> https://micropython.org/resources/source/micropython-1.21.0.tar.xz
Installing micropython-1.21.0...

BUILD FAILED (Arch Linux using python-build 20180424)

Inspect or clean up the working tree at /tmp/python-build.20250505133301.10872
Results logged to /tmp/python-build.20250505133301.10872.log

Last 10 log lines:
CC ../py/parsenumbase.c
CC ../py/parsenum.c
CC ../py/emitglue.c
cc1: all warnings being treated as errors
See https://github.com/micropython/micropython/wiki/Build-Troubleshooting
make: *** [../py/mkrules.mk:83: build/py/emitinlinethumb.o] Error 1
make: *** Waiting for unfinished jobs....
cc1: all warnings being treated as errors
See https://github.com/micropython/micropython/wiki/Build-Troubleshooting
make: *** [../py/mkrules.mk:83: build/py/emitinlinextensa.o] Error 1

examples from --verbose / log

../py/emitinlinethumb.c:153:9: error: initializer-string for array of ‘unsigned char’ truncates NUL terminator but destination lacks ‘nonstring’ attribute (4 chars into 3 available) [-Werror=unterminated-string-initialization]
  153 |     {0, "r0\0"},
      |         ^~~~~~
.
.
.
../py/emitinlinextensa.c:122:9: error: initializer-string for array of ‘unsigned char’ truncates NUL terminator but destination lacks ‘nonstring’ attribute (4 chars into 3 available) [-Werror=unterminated-string-initialization]
  122 |     {0, "a0\0"},
      |         ^~~~~~
.
.
.

Additional Information

I'm at the very beginning of my journey with MicroPython - thank you!

I will use MicroPython with Raspberry PI Pico 2, but fisrt starting with setting up a development on my Linux machine.

I 10000 was extremely pleased to see that pyenv lists MicroPython

Regrettably I experienced the errors reported above and just a few online slim hints for how to solve - I wanted the convenience of pyenv

As all the warnings were the same [-Werror=unterminated-string-initialization], sorted this - here for future Google searches and future me

 CFLAGS=-Wno-error=unterminated-string-initialization pyenv install micropython-1.21.0

Code of Conduct

Yes, I agree

jonnor · 2025-05-07T17:12:54Z

jonnor
May 7, 2025
Collaborator

@the-citto pyenv is not a supported method to install MicroPython. The latest version that pyenv has seems to be 1.21, which is multiple years old. If you have problems installing MicroPython with pyenv, please contact pyenv about it.

The current release of MicroPython is 1.25.0. The official way to install MicroPython on Linux is documented here: https://github.com/micropython/micropython/tree/master/ports/unix

On Arch Linux, there is also a package in AUR. It is reasonably well maintained. Was updated to 1.25 just a few days after the release.

1 reply

the-citto May 8, 2025
Author

thank you very much
just getting started from what I already know, soon realised that it wasn't the correct approach for a good dev setup
there is a plugin or two for Neovim, but I try to use plugins as little as possible

I have my own setup to send code from a Tmux pane with Neovim to another Tmux pane with a REPL - works well with ipython, node, SQLite, etc. and it's perfect for the mpremote REPL

I ended up also using micropython-rp2-stubs and so far dev flow is very enjoyable - and a nice break from typing :o)

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MicroPython

pyenv install failure - workaround #17250

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the-citto May 5, 2025

Port, board and/or hardware

MicroPython version

Reproduction

Expected behaviour

Observed behaviour

Additional Information

Code of Conduct

Replies: 1 comment · 1 reply

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jonnor May 7, 2025 Collaborator

Uh oh!

the-citto May 8, 2025 Author

the-citto
May 5, 2025

Replies: 1 comment 1 reply

jonnor
May 7, 2025
Collaborator

the-citto May 8, 2025
Author