Allow packages to specify their minimum compiler version

2 files changed, 23 insertions, 0 deletions

diff --git a/crates/typst-syntax/src/file.rs b/crates/typst-syntax/src/file.rs
index f5fa493b..8f07cc92 100644
--- a/crates/typst-syntax/src/file.rs
+++ b/crates/typst-syntax/src/file.rs
@@ -265,6 +265,17 @@ pub struct PackageVersion {
     pub patch: u32,
 }
 
+impl PackageVersion {
+    /// The current compiler version.
+    pub fn compiler() -> Self {
+        Self {
+            major: env!("CARGO_PKG_VERSION_MAJOR").parse().unwrap(),
+            minor: env!("CARGO_PKG_VERSION_MINOR").parse().unwrap(),
+            patch: env!("CARGO_PKG_VERSION_PATCH").parse().unwrap(),
+        }
+    }
+}
+
 impl FromStr for PackageVersion {
     type Err = EcoString;
 
diff --git a/crates/typst/src/eval/mod.rs b/crates/typst/src/eval/mod.rs
index 3f0e4577..fffedc9f 100644
--- a/crates/typst/src/eval/mod.rs
+++ b/crates/typst/src/eval/mod.rs
@@ -1920,6 +1920,16 @@ impl PackageManifest {
             );
         }
 
+        if let Some(compiler) = self.package.compiler {
+            let current = PackageVersion::compiler();
+            if current < compiler {
+                bail!(
+                    "package requires typst {compiler} or newer \
+                     (current version is {current})"
+                );
+            }
+        }
+
         Ok(())
     }
 }
@@ -1935,6 +1945,8 @@ struct PackageInfo {
     version: PackageVersion,
     /// The path of the entrypoint into the package.
     entrypoint: EcoString,
+    /// The minimum required compiler version for the package.
+    compiler: Option<PackageVersion>,
 }
 
 impl Eval for ast::LoopBreak<'_> {