Merge pull request #296 from lets-cli/feature/dependency-failure-tree

Show dependency failure tree when command chain fails

Author: kindermax

cmd/lets/main.go

@@ -11,6 +11,7 @@ import (
 	"github.com/lets-cli/lets/internal/cmd"
 	"github.com/lets-cli/lets/internal/config"
 	"github.com/lets-cli/lets/internal/env"
+	"github.com/lets-cli/lets/internal/executor"
 	"github.com/lets-cli/lets/internal/logging"
 	"github.com/lets-cli/lets/internal/set"
 	"github.com/lets-cli/lets/internal/upgrade"
@@ -119,6 +120,10 @@ func main() {
 	}
 
 	if err := rootCmd.ExecuteContext(ctx); err != nil {
+		var depErr *executor.DependencyError
+		if errors.As(err, &depErr) {
+			executor.PrintDependencyTree(depErr, os.Stderr)
+		}
 		log.Error(err.Error())
 		os.Exit(getExitCode(err, 1))
 	}

docs/docs/changelog.md

@@ -9,7 +9,7 @@ title: Changelog
 * `[Changed]` Exit code 2 on unknown command.
 * `[Added]` Expose `LETS_OS` and `LETS_ARCH` environment variables at command runtime.
 * `[Removed]` Drop deprecated `eval_env` directive. Use `env` with `sh` execution mode instead.
-* `[Fixed]` Evaluate `env` entries sequentially so `sh` values can reference previously resolved env keys (including global env for command-level env).
+* `[Added]` When a command or its `depends` chain fails, print an indented tree to stderr showing the full chain with the failing command highlighted
 
 ## [0.0.59](https://github.com/lets-cli/lets/releases/tag/v0.0.59)