tests.nixpkgs-check-by-name: Syntactic callPackage detection and allow new package variants

pkgs/test/nixpkgs-check-by-name/Cargo.toml

@@ -14,6 +14,8 @@ anyhow = "1.0"
 lazy_static = "1.4.0"
 colored = "2.0.4"
 itertools = "0.11.0"
+rowan = "0.15.11"
 
 [dev-dependencies]
 temp-env = "0.3.5"
+indoc = "2.0.4"

pkgs/test/nixpkgs-check-by-name/src/eval.nix

@@ -76,6 +76,7 @@ let
         CallPackage = {
           call_package_variant = value._callPackageVariant;
           is_derivation = pkgs.lib.isDerivation value;
+          location = builtins.unsafeGetAttrPos name pkgs;
         };
       };
 

pkgs/test/nixpkgs-check-by-name/src/main.rs

@@ -1,4 +1,6 @@
+use crate::nix_file::NixFileStore;
 mod eval;
+mod nix_file;
 mod nixpkgs_problem;
 mod ratchet;
 mod references;
@@ -116,6 +118,8 @@ pub fn check_nixpkgs<W: io::Write>(
     keep_nix_path: bool,
     error_writer: &mut W,
 ) -> validation::Result<ratchet::Nixpkgs> {
+    let mut nix_file_store = NixFileStore::default();
+
     Ok({
         let nixpkgs_path = nixpkgs_path.canonicalize().with_context(|| {
             format!(
@@ -132,9 +136,9 @@ pub fn check_nixpkgs<W: io::Write>(
             )?;
             Success(ratchet::Nixpkgs::default())
         } else {
-            check_structure(&nixpkgs_path)?.result_map(|package_names|
+            check_structure(&nixpkgs_path, &mut nix_file_store)?.result_map(|package_names|
                 // Only if we could successfully parse the structure, we do the evaluation checks
-                eval::check_values(&nixpkgs_path, package_names, keep_nix_path))?
+                eval::check_values(&nixpkgs_path, &mut nix_file_store, package_names, keep_nix_path))?
         }
     })
 }
@@ -169,7 +173,7 @@ mod tests {
 
     // tempfile::tempdir needs to be wrapped in temp_env lock
     // because it accesses TMPDIR environment variable.
-    fn tempdir() -> anyhow::Result<TempDir> {
+    pub fn tempdir() -> anyhow::Result<TempDir> {
         let empty_list: [(&str, Option<&str>); 0] = [];
         Ok(temp_env::with_vars(empty_list, tempfile::tempdir)?)
     }