diff --git a/packages/conf-python3-pyparsing/conf-python3-pyparsing.1/opam b/packages/conf-python3-pyparsing/conf-python3-pyparsing.1/opam
index ab4ae3d8477..038d9b9a4ed 100644
--- a/packages/conf-python3-pyparsing/conf-python3-pyparsing.1/opam
+++ b/packages/conf-python3-pyparsing/conf-python3-pyparsing.1/opam
@@ -18,10 +18,10 @@ depexts: [
   ["python3-pyparsing"] {os-family = "suse" | os-family = "opensuse"}
   ["python-pyparsing"] {os-family = "arch"}
   ["py3-parsing"] {os-family = "alpine"}
-  ["py39-parsing"] {os = "macos" & os-distribution = "macports"}
   ["py39-pyparsing"] {os = "freebsd"}
 ]
 
+available: os != "macos"
 synopsis: "Virtual package relying on PyParsing"
 description:
   "This package can only install if the PyParsing python3 library is installed on the system."
diff --git a/packages/conf-python3-tomli/conf-python3-tomli.1/opam b/packages/conf-python3-tomli/conf-python3-tomli.1/opam
index cd3a3bd8b52..dc70f5fe22e 100644
--- a/packages/conf-python3-tomli/conf-python3-tomli.1/opam
+++ b/packages/conf-python3-tomli/conf-python3-tomli.1/opam
@@ -18,10 +18,10 @@ depexts: [
   ["python-tomli"] {os-family = "suse" | os-family = "opensuse"}
   ["python-tomli"] {os-family = "arch"}
   ["py3-tomli"] {os-family = "alpine"}
-  ["py39-tomli"] {os = "macos" & os-distribution = "macports"}
   ["py39-tomli"] {os = "freebsd"}
 ]
 
+available: os != "macos"
 synopsis: "Virtual package relying on Tomli"
 description:
   "This package can only install if the Tomli python3 library is installed on the system."