Release Date : July 1, 2022
- Allow multiple BEFORE/AFTER blocks of same type in a MOD file. #1722
- Several documentation updates, including randomness in NEURON models #1727,
NEURON course exercise sets from 2018 #1735 and publications using NEURON #1819.
- CMake: improved documentation targets. (#1725)
- Support for Python 3.6 was dropped, as it has reached end-of-life (#1733).
- In this release, more declarations of NEURON methods (typically
hoc_functions) are implicitly included in translated MOD files. This can
cause compilation errors with MOD files that include incorrect declarations
of these methods in
VERBATIMblocks. (#1755, #1811, #1825).
- Declaring STATE variables as GLOBAL is now disallowed. (#1723)
Deprecations & future changes
- NEURON is in the process of being fully migrated to a
Starting with next major release
MODfiles will be converted to
This will break compatibility with some legacy MOD files containing VERBATIM blocks and code may have to be updated
given that some valid C code is not valid C++.
A migration guide
is being compiled in the latest online documentation (note that it may change post release).
Random123will be the default random number generator in NEURON and most of the random number distributions implementations will be
replaced by those in the C++ standard library, while a few will be discontinued. See #1330 for follow-up and questions.
- Fix for #335: Return proper exit code in hoc execution #1633
- Build on Ubuntu21.10 WSL: escape special characters (#1862)
Improvements / Other Changes
- Support for using
- HOC domain for Sphinx
- If your MOD files contain VERBATIM blocks you may need to refer to the aforementioned
C++ migration guide
and make minor changes to prepare for the upcoming
Remaining compatible with
8.2.0and older versions is typically straightforward.
For the complete list of features and bug fixes, see the list in GitHub Issue #1879