2.0.10 backport candidates

[arnetheduck]

git log --oneline --pretty="format:%m https://github.com/nim-lang/Nim/commit/%H %s" --left-right  --cherry-pick origin/devel...origin/version-2-0 

• nim-lang/Nim@770f8d5 opensym for templates + move behavior of opensymchoice to itself (#24007)
• nim-lang/Nim@4ef06a5 fixes cast expressions introduces unnecessary copies (#24004)
• nim-lang/Nim@dda638c fixes #23945; type checking for whenvm expresssions (#23970)
• nim-lang/Nim@34719ca allow untyped arguments to fail to compile in overload mismatch error (#23984)
• nim-lang/Nim@58813a3 make all generic aliases tyAlias (#23978)
• nim-lang/Nim@f7c11a8 allow generic compileTime proc folding (#22022)
• nim-lang/Nim@995081b fix is with type/typedesc crashing the compiler (#23967)
• nim-lang/Nim@298ada3 fixes #23954; uint8 > 8 bit at compile-time (#23955)
• nim-lang/Nim@c5b206d fix #23817; Use __builtin_saddl_overflow variants for arm-none-eabi-gcc. (#23835)
• nim-lang/Nim@f0e1eef fixes #14522 #22085 #12700 #23132; no range check for uints (#23930)
• nim-lang/Nim@bd06311 fixes #23894; succ/pred shouldn't raise OverflowDefect for unsigned integers (#23895)
• nim-lang/Nim@925dc5c fixes #19171; have openArray converted from ptr UncheckedArray be mutable (#23882)
• nim-lang/Nim@97f5474 fix generics treating symchoice symbols as uninstantiated (#23860)
• nim-lang/Nim@e53a2ed fixes #20865; fixes #20987; Missing bounds check in array slicing (#23814)
• nim-lang/Nim@288d5c4 fixes #5091; Ensure we don't wait on an exited process on Linux (#23743)
• nim-lang/Nim@2a658c6 fixes #23732, os.sleep(-1) now returns immediately (#23734)
• nim-lang/Nim@ae4b47c fixes #20048; fixes #15746; don't sink object fields if it's of openarray type (#23608)
• nim-lang/Nim@948bb38 ref #20653; fixes chronos empty case branches (#23706)
• nim-lang/Nim@8037bbe Fix non-exported memfiles.setFileSize to be able to shrink files on posix via memfiles.resize (#23717)
• nim-lang/Nim@8cbbe12 fixes #22398; [backport] (#23704)
• nim-lang/Nim@56c9575 fixes #23445; fixes #23418 [backport] (#23699)
• nim-lang/Nim@de4c7df fixes #22798; Duplicate libraries linker warning (i.e., '-lm') on macOS (#23292)
• [ ] nim-lang/Nim@d923c58 revert #23436; remove workaround (#23653) not applicable to v2.0.x
• nim-lang/Nim@cc5ce72 fixes #23635; tasks.toTask Doesn't Expect a Dot Expression (#23641)
• nim-lang/Nim@c615828 fixes #22852; fixes #23435; fixes #23645; SIGSEGV when slicing string or seq[T] with index out of range (#23279)
• nim-lang/Nim@3bda5fc Handle arbitrarily long symlink target in expandSymlinks() (#23650)
• nim-lang/Nim@5cd141c fixes reifiedOpenArray; nkHiddenStdConv is PathKinds1 not PathKinds0 (#23633)

[tersec]

When this is merged into devel:

• fix regression with uint constant losing abstract type Nim#24105

[tersec]

• make var/pointer types not match if base type has to be converted Nim#24130 when merged into devel

[tersec]

• fix inTypeofContext leaking after compiles raises exception [backport:2.0] Nim#24152
• don't trust completeStruct for typeinfo gen of imported C++ types [backport] Nim#24166 when merged
• fixes #24167; {.push deprecated.} for templates Nim#24170
• fixes #24173; always bundle checksums Nim#24189

[narimiran]

@tersec Until now (when I saw it mentioned in nim-lang/Nim#24189) I haven't realized that you edited your message above and added that PR to the list.
As such, it is unfortunately not part of 2.0.10, but I'll backport it now and it will be in 2.0.12.

And since 2.0.10 is out, I'm closing this issue.