Include dev/Cargo.toml

Cargo.toml

@@ -37,12 +37,14 @@ keywords = [
   "learning",
 ]
 include = [
-  "/exercises/",
-  "/info.toml",
-  "/LICENSE",
-  "/README.md",
-  "/solutions/",
   "/src/",
+  "/exercises/",
+  "/solutions/",
+  "/info.toml",
+  # A symlink to be able to include `dev/Cargo.toml` although `dev` is excluded.
+  "/dev-Cargo.toml",
+  "/README.md",
+  "/LICENSE",
 ]
 
 [dependencies]

dev-Cargo.toml

@@ -0,0 +1 @@
+dev/Cargo.toml

src/dev/check.rs

@@ -166,7 +166,7 @@ pub fn check() -> Result<()> {
     if DEBUG_PROFILE {
         check_cargo_toml(
             &info_file.exercises,
-            include_str!("../../dev/Cargo.toml"),
+            include_str!("../../dev-Cargo.toml"),
             b"../",
         )?;
     } else {

src/dev/update.rs

@@ -29,7 +29,7 @@ pub fn update() -> Result<()> {
     if DEBUG_PROFILE {
         update_cargo_toml(
             &info_file.exercises,
-            include_str!("../../dev/Cargo.toml"),
+            include_str!("../../dev-Cargo.toml"),
             b"../",
             "dev/Cargo.toml",
         )

src/init.rs

@@ -31,7 +31,7 @@ pub fn init() -> Result<()> {
         .init_exercises_dir(&info_file.exercises)
         .context("Failed to initialize the `rustlings/exercises` directory")?;
 
-    let current_cargo_toml = include_str!("../dev/Cargo.toml");
+    let current_cargo_toml = include_str!("../dev-Cargo.toml");
     // Skip the first line (comment).
     let newline_ind = current_cargo_toml
         .as_bytes()