| package rules_python |
| |
| import ( |
| "path/filepath" |
| "runtime" |
| |
| "go.skia.org/infra/bazel/go/bazel" |
| "go.skia.org/infra/go/skerr" |
| ) |
| |
| // FindPython3 returns the path to the `python3` binary provided by rules_python[1]. |
| // |
| // Calling this function from any Go package will automatically establish a Bazel dependency on the |
| // corresponding external Bazel repository. |
| // |
| // [1] https://github.com/bazelbuild/rules_python |
| func FindPython3() (string, error) { |
| if runtime.GOOS == "linux" { |
| // This path was determined by looking at the `interpreter` constant defined in |
| // @python3_10//:defs.bzl, e.g.: |
| // |
| // $ cat $(bazel info output_base)/external/python3_10/defs.bzl |
| // # Generated by python/repositories.bzl |
| // host_platform = "x86_64-unknown-linux-gnu" |
| // interpreter = "@python3_10_x86_64-unknown-linux-gnu//:bin/python3" |
| return filepath.Join(bazel.RunfilesDir(), "external", "python3_10_x86_64-unknown-linux-gnu", "bin", "python3"), nil |
| } |
| return "", skerr.Fmt("unsupported runtime.GOOS: %q", runtime.GOOS) |
| } |
