impl profile evaluation

src/repo/profile/package/parsers.rs

@@ -0,0 +1,13 @@
+use mon::{Parser, tag};
+
+use crate::{Parseable, atom::Atom, repo::profile::package::Package};
+
+impl<'a> Parseable<'a, &'a str> for Package {
+    type Parser = impl Parser<&'a str, Output = Self>;
+
+    fn parser() -> Self::Parser {
+        Atom::parser()
+            .map(Package::Add)
+            .or(Atom::parser().preceded_by(tag("-")).map(Package::Remove))
+    }
+}