Pipe nix build output

src/cli/cmd/apply.rs

@@ -89,12 +89,6 @@ impl CommandExecute for ApplySubcommand {
             return Err(FhError::MissingProfile(profile_path).into());
         }
 
-        tracing::debug!(
-            "Running: nix build --print-build-logs --max-jobs 0 --profile {} {}",
-            &profile_path,
-            &resolved_path.store_path,
-        );
-
         nix_command(&[
             "build",
             "--print-build-logs",

src/cli/cmd/mod.rs

@@ -385,30 +385,24 @@ macro_rules! flakehub_url {
 async fn nix_command(args: &[&str]) -> Result<(), FhError> {
     command_exists("nix")?;
 
+    tracing::debug!(
+        "Running: nix build --extra-experimental-features 'nix-command-flakes' {}",
+        args.join(" ")
+    );
+
     let output = tokio::process::Command::new("nix")
         .args(["--extra-experimental-features", "nix-command flakes"])
         .args(args)
-        .stdout(Stdio::inherit())
-        .stderr(Stdio::inherit())
-        .output()
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()?
+        .wait_with_output()
         .await?;
 
     if output.status.success() {
         Ok(())
     } else {
-        let mut s = String::new();
-
-        let stdout = String::from_utf8_lossy(&output.stdout).to_string();
-        if !stdout.is_empty() {
-            s.push_str(stdout.trim());
-        }
-
-        let stderr = String::from_utf8_lossy(&output.stderr).to_string();
-        if !stderr.is_empty() {
-            s.push_str(stderr.trim());
-        }
-
-        Err(FhError::FailedCommand(s))
+        Err(FhError::FailedNixCommand)
     }
 }
 

src/cli/error.rs

@@ -1,7 +1,7 @@
 #[derive(Debug, thiserror::Error)]
 pub(crate) enum FhError {
-    #[error("failed command: {0}")]
-    FailedCommand(String),
+    #[error("Nix command failed")]
+    FailedNixCommand,
 
     #[error("file error: {0}")]
     Filesystem(#[from] std::io::Error),