feat(tvix/eval): Implement comparison for lists

Lists are compared lexicographically in C++ nix as of [0], and our
updated nix test suites depend on this. This implements comparison of
list values in `Value::nix_cmp` using a very similar algorithm to what
C++ does - similarly to there, this requires passing in the VM so we can
force thunks in the list elements as we go.

[0]: 09471d2680#

Change-Id: I5d8bb07f90647a1fec83f775243e21af856afbb1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7070
Autosubmit: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This commit is contained in:
Griffin Smith 2022-10-23 13:37:11 -04:00 committed by tazjin
parent b8a7dba709
commit d0a836b0e1
7 changed files with 45 additions and 3 deletions

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@ -0,0 +1 @@
[ false true true true false true false false false true false false false true true ]

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[
([1 2] < [1])
([1 2] < [2 3])
([1 2] < [2])
([1 2] < [1 2 3])
([3 4] < [1])
([1 2] > [1])
([1 2] > [2 3])
([1 2] > [2])
([1 2] > [1 2 3])
([3 4] > [1])
([1 2] <= [1])
([1 2] >= [2 3])
([1 2] >= [2])
([1 2] <= [1 2 3])
([3 4] >= [1])
]