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fix(tvix/eval): handle builtins.split matching the empty string

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This prevents the following statements from looping endlessly:

```
builtins.split "(.*)" ""
builtins.split "([abc]*)" "abc"
builtins.split "(.*)" "abc"
builtins.split ".*" ""
```

Cover these (and some more examples) in the test suite.

Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: Ibd339f971e0f4e3e5c229816e2be5a8e3836fec9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11743
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This commit is contained in:
binarycat 2024-06-02 19:58:54 +02:00 • committed by clbot
parent 154e0d71e0
commit beb7f57c73
4 changed files with 15 additions and 1 deletions
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2
tvix/glue/src/tests/tvix_tests/eval-okay-context-introspection.nix
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@ -71,7 +71,7 @@ in
(builtins.hasAttr "allOutputs" (builtins.getContext drv.drvPath)."${builtins.unsafeDiscardStringContext drv.drvPath}")
(legit-context == desired-context) # FIXME(raitobezarius): this should not use `builtins.seq`, this is a consequence of excessive laziness of Tvix, I believe.
(reconstructed-path == combo-path)
# Those are too slow?
# These still fail with an internal error
# (etaRule' "foo")
# (etaRule' combo-path)
(etaRule "foo")