Update PEP 723 lockfile in uv add --script

crates/uv-cli/src/lib.rs

@@ -3237,7 +3237,12 @@ pub struct AddArgs {
     /// a new one will be created and added to the script. When executed via `uv run`,
     /// uv will create a temporary environment for the script with all inline
     /// dependencies installed.
-    #[arg(long, conflicts_with = "dev", conflicts_with = "optional")]
+    #[arg(
+        long,
+        conflicts_with = "dev",
+        conflicts_with = "optional",
+        conflicts_with = "package"
+    )]
     pub script: Option<PathBuf>,
 
     /// The Python interpreter to use for resolving and syncing.

crates/uv-scripts/src/lib.rs

@@ -230,15 +230,15 @@ impl Pep723Script {
     }
 
     /// Replace the existing metadata in the file with new metadata and write the updated content.
-    pub async fn write(&self, metadata: &str) -> Result<(), Pep723Error> {
+    pub fn write(&self, metadata: &str) -> Result<(), io::Error> {
         let content = format!(
             "{}{}{}",
             self.prelude,
             serialize_metadata(metadata),
             self.postlude
         );
 
-        fs_err::tokio::write(&self.path, content).await?;
+        fs_err::write(&self.path, content)?;
 
         Ok(())
     }
@@ -307,7 +307,7 @@ impl Pep723Metadata {
 }
 
 impl FromStr for Pep723Metadata {
-    type Err = Pep723Error;
+    type Err = toml::de::Error;
 
     /// Parse `Pep723Metadata` from a raw TOML string.
     fn from_str(raw: &str) -> Result<Self, Self::Err> {