f7ba502005
This commit implements builtins.currentSystem, by capturing the cargo environment variable `TARGET` and exposing it to rustc as `TVIX_CURRENT_SYSTEM` so it can be inserted into the source code using `env!()`. The resulting value needs to be massaged a bit, since it is an "LLVM triple". The current code should work for all the platforms for which cppnix works (thanks qyliss for generating the list!). It does *not* reject all of the triples that cppnix's configure.ac rejects -- it is much more forgiving. We can tighten this up in a future commit. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: I947f504b2af5a7fee8cf0cb301421d2fc9174ce1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6986 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
12 lines
225 B
Nix
12 lines
225 B
Nix
assert builtins ? currentSystem;
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assert !builtins ? __currentSystem;
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let {
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x = if builtins ? dirOf then builtins.dirOf /foo/bar else "";
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y = if builtins ? fnord then builtins.fnord "foo" else "";
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body = x + y;
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}
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