Try py_binary instead of sh_binary

haskell/private/runghc.bzl

@@ -1,4 +1,5 @@
 load("@bazel_skylib//lib:paths.bzl", "paths")
+load("@rules_python//python:defs.bzl", "py_binary")
 
 # Note [Running Setup.hs when cross-compiling]
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -21,22 +22,15 @@ def _runghc_wrapper_impl(ctx):
     ctx.actions.write(
         output = runghc_wrapper_file,
         content = """\
-#!/usr/bin/env bash
+#!/usr/bin/env python3
 
-# --- begin runfiles.bash initialization v2 ---
-# Copy-pasted from the Bazel Bash runfiles library v2.
-set -uo pipefail; f=bazel_tools/tools/bash/runfiles/runfiles.bash
-source "${{RUNFILES_DIR:-/dev/null}}/$f" 2>/dev/null || \
-source "$(grep -sm1 "^$f " "${{RUNFILES_MANIFEST_FILE:-/dev/null}}" | cut -f2- -d' ')" 2>/dev/null || \
-source "$0.runfiles/$f" 2>/dev/null || \
-source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
-source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
-{{ echo>&2 "ERROR: cannot find $f"; exit 1; }}; f=; set -e
-# --- end runfiles.bash initialization v2 ---
+import subprocess
+import sys
+from rules_python.python.runfiles import runfiles
 
-echo $0.runfiles_manifest 1>&2
-find "$(dirname "$0")" -name "runghc*manifest*" 1>&2
-$(rlocation "{runghc}") "$@"
+r = runfiles.Create()
+
+subprocess.run([r.Rlocation("{runghc}")] + sys.argv[1:], check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 """.format(runghc = runghc_runfile_path),
         is_executable = True,
     )
@@ -55,14 +49,16 @@ _runghc_wrapper = rule(
     doc = """Produces the runghc wrapper script.""",
 )
 
-def runghc(name, visibility):
-    _runghc_wrapper(name = name + ".sh")
-    native.sh_binary(
+def runghc(name, **kwargs):
+    _runghc_wrapper(name = name + ".py")
+    py_binary(
         name = name,
-        srcs = [name + ".sh"],
-        data = [name + ".sh"],
+        srcs = [name + ".py"],
+        data = [name + ".py"],
+		srcs_version = "PY3",
+		python_version = "PY3",
         deps = [
-            "@bazel_tools//tools/bash/runfiles",
+            "@rules_python//python/runfiles",
         ],
-        visibility = visibility,
+        **kwargs,
     )