Provide better output when downloading versions fails

- include stdout/stderr when utf8_output() fails
- don't swallow the error returned by handle_Version_install_or_update
- skip codesigning when NODMG set

Closes #4224

qt/launcher/mac/build.sh

@@ -38,7 +38,8 @@ cp ../pyproject.toml "$APP_LAUNCHER/Contents/Resources/"
 cp ../../../.python-version "$APP_LAUNCHER/Contents/Resources/"
 cp ../versions.py "$APP_LAUNCHER/Contents/Resources/"
 
-# Codesign
+# Codesign/bundle
+if [ -z "$NODMG" ]; then
     for i in "$APP_LAUNCHER/Contents/MacOS/uv" "$APP_LAUNCHER/Contents/MacOS/launcher" "$APP_LAUNCHER"; do
         codesign --force -vvvv -o runtime -s "Developer ID Application:" \
         --entitlements entitlements.python.xml \
@@ -49,8 +50,7 @@ done
     codesign -vvv "$APP_LAUNCHER"
     spctl -a "$APP_LAUNCHER"
 
-# Notarize and bundle (skip if NODMG is set)
-if [ -z "$NODMG" ]; then
+    # Notarize and build dmg
     ./notarize.sh "$OUTPUT_DIR"
     ./dmg/build.sh "$OUTPUT_DIR"
 fi

qt/launcher/src/main.rs

@@ -378,9 +378,7 @@ fn main_menu_loop(state: &State) -> Result<()> {
                 continue;
             }
             choice @ (MainMenuChoice::Latest | MainMenuChoice::Version(_)) => {
-                if handle_version_install_or_update(state, choice.clone()).is_err() {
-                    continue;
-                }
+                handle_version_install_or_update(state, choice.clone())?;
                 break;
             }
         }
@@ -650,7 +648,13 @@ fn fetch_versions(state: &State) -> Result<Vec<String>> {
         .args(["run", "--no-project"])
         .arg(&versions_script);
 
-    let output = cmd.utf8_output()?;
+    let output = match cmd.utf8_output() {
+        Ok(output) => output,
+        Err(e) => {
+            print!("Unable to check for Anki versions. Please check your internet connection.\n\n");
+            return Err(e.into());
+        }
+    };
     let versions = serde_json::from_str(&output.stdout).context("Failed to parse versions JSON")?;
     Ok(versions)
 }

rslib/process/src/lib.rs

@@ -11,6 +11,24 @@ use snafu::ensure;
 use snafu::ResultExt;
 use snafu::Snafu;
 
+#[derive(Debug)]
+pub struct CodeDisplay(Option<i32>);
+
+impl std::fmt::Display for CodeDisplay {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self.0 {
+            Some(code) => write!(f, "{code}"),
+            None => write!(f, "?"),
+        }
+    }
+}
+
+impl From<Option<i32>> for CodeDisplay {
+    fn from(code: Option<i32>) -> Self {
+        CodeDisplay(code)
+    }
+}
+
 #[derive(Debug, Snafu)]
 pub enum Error {
     #[snafu(display("Failed to execute: {cmdline}"))]
@@ -18,8 +36,15 @@ pub enum Error {
         cmdline: String,
         source: std::io::Error,
     },
-    #[snafu(display("Failed with code {code:?}: {cmdline}"))]
-    ReturnedError { cmdline: String, code: Option<i32> },
+    #[snafu(display("Failed to run ({code}): {cmdline}"))]
+    ReturnedError { cmdline: String, code: CodeDisplay },
+    #[snafu(display("Failed to run ({code}): {cmdline}: {stdout}{stderr}"))]
+    ReturnedWithOutputError {
+        cmdline: String,
+        code: CodeDisplay,
+        stdout: String,
+        stderr: String,
+    },
     #[snafu(display("Couldn't decode stdout/stderr as utf8"))]
     InvalidUtf8 {
         cmdline: String,
@@ -71,31 +96,36 @@ impl CommandExt for Command {
             status.success(),
             ReturnedSnafu {
                 cmdline: get_cmdline(self),
-                code: status.code(),
+                code: CodeDisplay::from(status.code()),
             }
         );
         Ok(self)
     }
 
     fn utf8_output(&mut self) -> Result<Utf8Output> {
+        let cmdline = get_cmdline(self);
         let output = self.output().with_context(|_| DidNotExecuteSnafu {
-            cmdline: get_cmdline(self),
+            cmdline: cmdline.clone(),
         })?;
+
+        let stdout = String::from_utf8(output.stdout).with_context(|_| InvalidUtf8Snafu {
+            cmdline: cmdline.clone(),
+        })?;
+        let stderr = String::from_utf8(output.stderr).with_context(|_| InvalidUtf8Snafu {
+            cmdline: cmdline.clone(),
+        })?;
+
         ensure!(
             output.status.success(),
-            ReturnedSnafu {
-                cmdline: get_cmdline(self),
-                code: output.status.code(),
+            ReturnedWithOutputSnafu {
+                cmdline,
+                code: CodeDisplay::from(output.status.code()),
+                stdout: stdout.clone(),
+                stderr: stderr.clone(),
             }
         );
-        Ok(Utf8Output {
-            stdout: String::from_utf8(output.stdout).with_context(|_| InvalidUtf8Snafu {
-                cmdline: get_cmdline(self),
-            })?,
-            stderr: String::from_utf8(output.stderr).with_context(|_| InvalidUtf8Snafu {
-                cmdline: get_cmdline(self),
-            })?,
-        })
+
+        Ok(Utf8Output { stdout, stderr })
     }
 
     fn ensure_spawn(&mut self) -> Result<std::process::Child> {
@@ -135,7 +165,10 @@ mod test {
         #[cfg(not(windows))]
         assert!(matches!(
             Command::new("false").ensure_success(),
-            Err(Error::ReturnedError { code: Some(1), .. })
+            Err(Error::ReturnedError {
+                code: CodeDisplay(_),
+                ..
+            })
         ));
     }
 }