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authorGriffin Smith <root@gws.fyi>2022-09-18T20·34-0400
committergrfn <grfn@gws.fyi>2022-09-22T01·36+0000
commit9e16d708092e88d0013ef96ef9a33ec28b2c46ea (patch)
treed645f726f9e06164e16747ede5bd833c9eeeedb9 /tvix/eval/Cargo.toml
parent7bf1b4deea0be5fcb183b7b39165185c2e9fc521 (diff)
feat(tvix/eval): Sketch out impure builtins r/4954
Sketch out a new set of "impure" builtins, which supplement the existing
set of "pure" builtins but are gated behind a feature flag, which allows
them to be omitted by crates depending on tvix-eval that only want pure
evaluation, such as tvixbolt.

Change-Id: I2736017b5c9b4776bbba8758e108ec84887abd66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6655
Reviewed-by: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>
Diffstat (limited to 'tvix/eval/Cargo.toml')
-rw-r--r--tvix/eval/Cargo.toml5
1 files changed, 4 insertions, 1 deletions
diff --git a/tvix/eval/Cargo.toml b/tvix/eval/Cargo.toml
index bf34159656aa..b23fc057ad5a 100644
--- a/tvix/eval/Cargo.toml
+++ b/tvix/eval/Cargo.toml
@@ -39,7 +39,7 @@ itertools = "0.10.3"
 tempdir = "0.3.7"
 
 [features]
-default = [ "repl", "arbitrary" ]
+default = [ "repl", "impure", "arbitrary" ]
 
 # Enables running the Nix language test suite from the original C++
 # Nix implementation (at version 2.3) against Tvix.
@@ -48,6 +48,9 @@ nix_tests = []
 # Enables building the binary (tvix-eval REPL)
 repl = [ "dep:rustyline", "dep:clap" ]
 
+# Enables operations in the VM which depend on the ability to perform I/O
+impure = []
+
 # Enables Arbitrary impls for internal types (required to run tests)
 arbitrary = [ "proptest", "test-strategy" ]