depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2023-06-15	r/6315 chore(tvix/eval): fix markdown labeled link syntax	sterni	1	-2/+2
	Change-Id: I639dc0801090eaba56b61858e28204b5a0e631b6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8784 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org>
2022-10-15	r/5133 fix(tvix/eval): bring foldl' strictness in line with C++ Nix	sterni	1	-1/+6
	Working on https://github.com/NixOS/nix/pull/7158, I discovered that C++ Nix actually is strict in the accumulator, just not in the first value. This seems due to the fact that in the C++ evaluator, function calls don't seem to be thunked unconditionally and foldl' just elects not to wrap it in a thunk (don't quote me on this summary, even though it seems to line up with the code for primop_foldlStrict and testable behavior). It doesn't seem worth it to risk breaking the odd Nix expression just to be strict in one more value per invocation of foldl' (i.e. the initial accumulator value `nul`), so let's match the existing C++ Nix behavior here. Change-Id: If59e62271a90d97cb440f0ca72a58ec7840d1690 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7022 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-11	r/5105 fix(tvix/eval/builtins): force acc not list element in foldl'	sterni	1	-0/+2
	When investigating discrepancies between foldl' in tvix and C++ Nix, I discovered that C++ Nix's foldl' doesn't seem to be strict at all. Since this seemed wrong, I looked into Haskell's foldl' implementation which doesn't force the list elements (`val` in our code), but the accumulation value (`res` in our code). You can look at the code here: https://hackage.haskell.org/package/base-4.17.0.0/docs/src/GHC.List.html#foldl%27 This actually makes a lot of sense: If `res` is not forced after each application of `op`, we'll end up thunks nested as deeply as the list is long, potentially taking up a lot of space. This can be limited by forcing the `res` thunk before applying `op` again (and creating a new thunk). I've also PR-ed an equivalent change for C++ Nix at https://github.com/NixOS/nix/pull/7158. Since this is not merged nor backported to our Nix 2.3 fork, I've not copied the eval fail test yet, since it wouldn't when checking our tests against C++ Nix in depot. Change-Id: I34edf6fc3031fc1485c3e714f2280b4fba8f004b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6947 Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-10-01	r/5008 docs(tvix/eval): start doc about problematic/weird lang behavior	sterni	1	-0/+39
	The idea is that we can keep track of the more unexpected behavior, behavior that maybe should not be a thing at all and behavior we are not sure about yet. Change-Id: I70933f00af1230a7ab9d30e917b61199fe571caf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6803 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>