Fixes bug found in delivery_overlay_packages_from_env():

* When "pip freeze" does not emit any packages we now avoid replacing the context's pip package list with an empty one.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/delivery_install.c b/src/delivery_install.c
index a7754e8..76c3f4a 100644
--- a/src/delivery_install.c
+++ b/src/delivery_install.c
@@ -99,8 +99,12 @@ int delivery_overlay_packages_from_env(struct Delivery *ctx, const char *env_nam
             }
         }
     }
-    guard_strlist_free(&ctx->conda.pip_packages);
-    ctx->conda.pip_packages = strlist_copy(new_list);
+
+    // Replace the package manifest as needed
+    if (strlist_count(new_list)) {
+        guard_strlist_free(&ctx->conda.pip_packages);
+        ctx->conda.pip_packages = strlist_copy(new_list);
+    }
     guard_strlist_free(&new_list);
     guard_strlist_free(&frozen_list);
     return 0;