Provide better errors on unknown type in cyclic definitions.

Let's consider the following case:

  ```
  type Var =
    Integer

  type Vars =
    List<Var>
  ```

  This incorrectly reports an infinite cycle; due to the inability to
  properly type-check `Var` which is also a dependent var of `Vars`. Yet
  the real issue here being that `Integer` is an unknown type.

  This commit also upgrades miette to 7.2.0, so that we can also display
  a better error output when the problem is actually a cycle.

crates/aiken-project/Cargo.toml

@@ -26,7 +26,7 @@ hex = "0.4.3"
 ignore = "0.4.20"
 indexmap = "1.9.2"
 itertools = "0.10.5"
-miette = { version = "5.9.0", features = ["fancy"] }
+miette.workspace = true
 notify = "6.1.1"
 num-bigint = "0.4.4"
 owo-colors = { version = "3.5.0", features = ["supports-colors"] }

crates/aiken-project/src/blueprint/error.rs

@@ -19,7 +19,7 @@ pub enum Error {
         #[label("invalid validator's boundary")]
         location: Span,
         #[source_code]
-        source_code: NamedSource,
+        source_code: NamedSource<String>,
     },
 
     #[error("Invalid or missing project's blueprint file.")]

crates/aiken-project/src/blueprint/snapshots/aiken_project__blueprint__validator__tests__free_vars.snap

@@ -20,5 +20,6 @@ Schema {
     source_code: NamedSource {
         name: "",
         source: "<redacted>",
+        language: None,
     ,
 }

crates/aiken-project/src/blueprint/snapshots/aiken_project__blueprint__validator__tests__opaque_singleton_multi_variants.snap

@@ -20,5 +20,6 @@ Schema {
     source_code: NamedSource {
         name: "",
         source: "<redacted>",
+        language: None,
     ,
 }

crates/aiken-project/src/blueprint/snapshots/aiken_project__blueprint__validator__tests__opaque_singleton_variants.snap

@@ -51,5 +51,6 @@ Schema {
     source_code: NamedSource {
         name: "",
         source: "<redacted>",
+        language: None,
     ,
 }

crates/aiken-project/src/error.rs

@@ -16,7 +16,6 @@ use owo_colors::{
 use std::{
     fmt::{Debug, Display},
     io,
-    ops::Deref,
     path::{Path, PathBuf},
 };
 use zip::result::ZipError;
@@ -62,7 +61,7 @@ pub enum Error {
     TomlLoading {
         path: PathBuf,
         src: String,
-        named: Box<NamedSource>,
+        named: Box<NamedSource<String>>,
         location: Option<Span>,
         help: String,
     },
@@ -77,7 +76,7 @@ pub enum Error {
     Parse {
         path: PathBuf,
         src: String,
-        named: NamedSource,
+        named: Box<NamedSource<String>>,
         #[source]
         error: Box<ParseError>,
     },
@@ -86,7 +85,7 @@ pub enum Error {
     Type {
         path: PathBuf,
         src: String,
-        named: NamedSource,
+        named: NamedSource<String>,
         #[source]
         error: tipo::error::Error,
     },
@@ -156,7 +155,7 @@ impl Error {
             errors.push(Error::Parse {
                 path: path.into(),
                 src: src.to_string(),
-                named: NamedSource::new(path.display().to_string(), src.to_string()),
+                named: NamedSource::new(path.display().to_string(), src.to_string()).into(),
                 error: error.into(),
             });
         }
@@ -451,11 +450,11 @@ impl Diagnostic for Error {
             Error::ExportNotFound { .. } => None,
             Error::Blueprint(e) => e.source_code(),
             Error::NoDefaultEnvironment { .. } => None,
-            Error::Parse { named, .. } => Some(named),
+            Error::Parse { named, .. } => Some(named.as_ref()),
             Error::Type { named, .. } => Some(named),
             Error::StandardIo(_) => None,
             Error::MissingManifest { .. } => None,
-            Error::TomlLoading { named, .. } => Some(named.deref()),
+            Error::TomlLoading { named, .. } => Some(named.as_ref()),
             Error::Format { .. } => None,
             Error::TestFailure { .. } => None,
             Error::Http(_) => None,
@@ -538,7 +537,7 @@ pub enum Warning {
     Type {
         path: PathBuf,
         src: String,
-        named: NamedSource,
+        named: NamedSource<String>,
         #[source]
         warning: tipo::error::Warning,
     },

crates/aiken-project/src/lib.rs

@@ -762,7 +762,7 @@ where
             .map(|(path, src, named, error)| Error::Parse {
                 path,
                 src,
-                named,
+                named: named.into(),
                 error,
             })
             .collect();
@@ -812,10 +812,6 @@ where
                     &mut self.data_types,
                 )?;
 
-                if name == "foo" {
-                    println!("{:#?}", checked_module.ast);
-                }
-
                 if our_modules.contains(checked_module.name.as_str()) {
                     self.warnings.extend(warnings);
                 }

crates/aiken-project/src/snapshots/aiken_project__export__tests__cannot_export_generics.snap

@@ -20,5 +20,6 @@ Schema {
     source_code: NamedSource {
         name: "",
         source: "<redacted>",
+        language: None,
     ,
 }

crates/aiken-project/src/snapshots/aiken_project__export__tests__illegal_opaque_type.snap

@@ -20,5 +20,6 @@ Schema {
     source_code: NamedSource {
         name: "",
         source: "<redacted>",
+        language: None,
     ,
 }