Add config option and allow override in pip_library rule (#62)

Author: samwestmoreland

.plzconfig

@@ -74,6 +74,11 @@ ConfigKey = DisableVendorFlags
 DefaultValue = false
 Inherit = true
 
+[PluginConfig "pip_compile_flags"]
+ConfigKey = PipCompileFlags
+Optional = true
+Inherit = true
+
 [PluginConfig "wheel_repo"]
 ConfigKey = WheelRepo
 Optional = true

build_defs/python.build_defs

@@ -403,8 +403,9 @@ def pip_library(name:str, version:str, hashes:list=None, package_name:str=None,
 
     pip_tool = "$TOOLS_PIP" if CONFIG.PYTHON.PIP_TOOL else '$TOOLS_PYTHON -m pip'
 
-    # Unset these compiler and linker flags as macOS doesn't have all these options.
-    pip_compile_flags = 'CFLAGS=" -Wl,--build-id=none -g0 " LDFLAGS=" -Wl,--build-id=none"' if CONFIG.HOSTOS != 'darwin' else 'CFLAGS=" -g0"'
+    # Set pip compile flags and allow override with config option.
+    pip_compile_flags = 'CFLAGS=" -Wl,--build-id=none -g0 " LDFLAGS=" -Wl,--build-id=none"' if CONFIG.HOSTOS == 'linux' else 'CFLAGS=" -g0"'
+    pip_compile_flags = CONFIG.PYTHON.PIP_COMPILE_FLAGS or pip_compile_flags
 
     pip_cmd = (
         f'mkdir {pip_target_dir} && '