[New-bugs-announce] [issue35808] Let's retire pgen

[Guido van Rossum]

New submission from Guido van Rossum <guido at python.org>:

Pgen is literally the oldest piece of technology in the CPython repo -- it was the first thing I wrote for Python over 29 years ago. It's not aged well, and building it requires various #if[n]def PGEN hacks in other parts of the code; it also depends more and more on CPython internals. There already is a replacement written in pure Python (Lib/lib2to3/pgen/), it just needs some glue to actually generate the graminit.[ch] files. Note that several other essential generation steps (everything listed for regen-all except regen-importlib and clinic) already depend on having a working Python interpreter around, so let's not worry about the bootstrapping process.

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components: Build
messages: 334247
nosy: gvanrossum
priority: low
severity: normal
stage: needs patch
status: open
title: Let's retire pgen
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35808>
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