Top Nim issues

Tracking memory leaks under ORC (mostly with async)

ARORC Async Showstopper

Very high memory usage due to numerous inefficiencies in the STD lib (async)

Performance

assigning global var to local let does not properly copy

High Priority

Base64 Regression

Showstopper

GCC Error: redefinition of struct

Type sections

Expose testament as part of the standard library

Feature Stdlib

asyncfile.readline blocks (and behaves differently between Linux and MacOS)

Async

Power op ^ is not optimized for a: int; echo a ^ 2 case (minor bug)

Low Priority Performance Stdlib

Openarray of openarrays: type mismatch for array/seq of arrays/seq

Error messages

Async readAll in httpclient produces garbled output.

Regression Showstopper Stdlib