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Diffstat (limited to 'third_party/bazel/rules_haskell/tools/runfiles/README.md')
-rw-r--r-- | third_party/bazel/rules_haskell/tools/runfiles/README.md | 19 |
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diff --git a/third_party/bazel/rules_haskell/tools/runfiles/README.md b/third_party/bazel/rules_haskell/tools/runfiles/README.md new file mode 100644 index 000000000000..9e95713179af --- /dev/null +++ b/third_party/bazel/rules_haskell/tools/runfiles/README.md @@ -0,0 +1,19 @@ +# Bazel Runfiles + +This is a small utility to enable discovery of the Bazel runfiles location. This is useful in tests for example. + +```haskell +module Main (main) where + +import qualified Bazel.Runfiles as Runfiles +import Control.Monad (when) +import System.Process (callProcess) + +main :: IO () +main = do + r <- Runfiles.create + foo <- readFile (Runfiles.rlocation r "io_tweag_rules_haskell/tools/runfiles/test-data.txt") + when (lines foo /= ["foo"]) -- ignore trailing newline + $ error $ "Incorrect contents: got: " ++ show foo + callProcess (Runfiles.rlocation r "io_tweag_rules_haskell/tools/runfiles/bin") [] +``` |