micropython/ports
Jim Mussared 3bf70f16e9 py/mkrules.mk: Add MICROPY_PREVIEW_VERSION_2.
This provides a way to enable features and changes slated for MicroPython
2.x, by running `make MICROPY_PREVIEW_VERSION_2=1`. Also supported for
the cmake ports (except Zephyr).

This is an alternative to having a 2.x development branch (or equivalently,
keeping a 1.x release branch). Any feature or change that needs to be
"hidden" until 2.x can use this flag (either in the Makefile or the
preprocessor).

A good example is changing function arguments or other public API features,
in particular to aid in improving consistency between ports.

When `MICROPY_PREVIEW_VERSION_2` is enabled, the REPL banner is amended to
say "MicroPython (with v2.0 preview) vX.Y.Z", and sys.implementation gets a
new field `_v2` set to `True`.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2023-10-27 15:28:46 +11:00
..
bare-arm
cc3200
embed
esp32 py/mkrules.mk: Add MICROPY_PREVIEW_VERSION_2. 2023-10-27 15:28:46 +11:00
esp8266
mimxrt
minimal
nrf
pic16bit
powerpc
qemu-arm
renesas-ra
rp2 py/mkrules.mk: Add MICROPY_PREVIEW_VERSION_2. 2023-10-27 15:28:46 +11:00
samd
stm32
teensy
unix
webassembly
windows
zephyr