diff --git a/profiles/env/single-make.conf b/profiles/env/single-make.conf
new file mode 100644
index 0000000..1b43095
--- /dev/null
+++ b/profiles/env/single-make.conf
@@ -0,0 +1 @@
+MAKEOPTS="-j1"
diff --git a/profiles/package.env b/profiles/package.env
new file mode 100644
index 0000000..1bdd004
--- /dev/null
+++ b/profiles/package.env
@@ -0,0 +1 @@
+dev-libs/libtrhash	single-make.conf