Fix crashes in servicelab jobs

Reviewed By: stroxler

Differential Revision: D30457421

fbshipit-source-id: 1969a33ee3ca3f95d7bfd959ff9557c708933738

Author: grievejia

scripts/setup.py

@@ -11,6 +11,7 @@
 import os
 import shutil
 import subprocess
+import sys
 from enum import Enum
 from pathlib import Path
 from tempfile import mkdtemp
@@ -51,6 +52,19 @@ class BuildType(Enum):
     FACEBOOK = "facebook"
 
 
+def _custom_linker_option(pyre_directory: Path, build_type: BuildType) -> str:
+    # HACK: This is a temporary workaround for inconsistent OS installations
+    # in FB-internal CI. Can be removed once all fleets are upgraded.
+    if build_type == BuildType.FACEBOOK and sys.platform == "linux":
+        return (
+            (pyre_directory / "facebook" / "scripts" / "custom_linker_options.txt")
+            .read_text()
+            .rstrip()
+        )
+    else:
+        return ""
+
+
 class Setup(NamedTuple):
     opam_root: Path
 
@@ -91,7 +105,12 @@ def produce_dune_file(
         with open(pyre_directory / "source" / "dune.in") as dune_in:
             with open(pyre_directory / "source" / "dune", "w") as dune:
                 dune_data = dune_in.read()
-                dune.write(dune_data.replace("%VERSION%", build_type.value))
+                dune.write(
+                    dune_data.replace("%VERSION%", build_type.value).replace(
+                        "%CUSTOM_LINKER_OPTION%",
+                        _custom_linker_option(pyre_directory, build_type),
+                    )
+                )
 
     def check_if_preinstalled(self) -> None:
         if self.environment_variables.get(

source/dune.in

@@ -207,6 +207,7 @@
     ppx_compare ppx_sexp_conv))
  (ocamlc_flags
   (:standard -custom))
+ %CUSTOM_LINKER_OPTION%
  (libraries pyrelib))
 
 (alias