fix: Use default timestamp when no timestamp is provided in package

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "pixi-pack"
 description = "A command line tool to pack and unpack conda environments for easy sharing"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2021"
 
 [features]

examples/no-timestamp/pixi.toml

@@ -0,0 +1,7 @@
+[project]
+channels = ["conda-forge"]
+name = "no-timestamp"
+platforms = ["osx-64"]
+
+[dependencies]
+mpi = { version = "1.0", build = "openmpi" }

src/pack.rs

@@ -281,10 +281,15 @@ async fn download_package(
     let package_timestamp = package
         .package_record()
         .timestamp
-        .ok_or_else(|| anyhow!("could not read package timestamp"))?;
+        .map_or({
+            tracing::error!("could not get timestamp of {:?}, using default", package.file_name());
+            std::time::SystemTime::UNIX_EPOCH
+        }, |ts| {
+            ts.into()
+        });
     let file_times = FileTimes::new()
-        .set_modified(package_timestamp.into())
-        .set_accessed(package_timestamp.into());
+        .set_modified(package_timestamp)
+        .set_accessed(package_timestamp);
 
     // Make sure to write all data and metadata to disk before modifying timestamp.
     dest.sync_all().await?;

tests/integration_test.rs

@@ -338,6 +338,17 @@ async fn test_non_authenticated(
         .contains("failed to download"));
 }
 
+#[rstest]
+#[tokio::test]
+async fn test_no_timestamp(
+    #[with(PathBuf::from("examples/no-timestamp/pixi.toml"))] options: Options,
+) {
+    let mut pack_options = options.pack_options;
+    pack_options.platform = Platform::Osx64;
+    let pack_result = pixi_pack::pack(pack_options).await;
+    assert!(pack_result.is_ok());
+}
+
 #[rstest]
 #[tokio::test]
 async fn test_custom_env_name(options: Options) {