Improve error messages, esp. when the server is running

* Add file context to minifier errors when publishing
* Misc fixes (see issues)
* Allow custom server error template in layouts/server/error.html

To get to this, this commit also cleans up and simplifies the code surrounding errors and files. This also removes the usage of `github.com/pkg/errors`, mostly because of https://github.com/pkg/errors/issues/223 -- but also because most of this is now built-in to Go.

Fixes #9852
Fixes #9857
Fixes #9863

1 files changed, 4 insertions, 4 deletions

diff --git a/hugofs/walk.go b/hugofs/walk.go
index 26f1b74e0..22a99402f 100644
--- a/hugofs/walk.go
+++ b/hugofs/walk.go
@@ -22,7 +22,7 @@ import (
 
 	"github.com/gohugoio/hugo/common/loggers"
 
-	"github.com/pkg/errors"
+	"errors"
 
 	"github.com/spf13/afero"
 )
@@ -125,7 +125,7 @@ func (w *Walkway) Walk() error {
 			if w.checkErr(w.root, err) {
 				return nil
 			}
-			return w.walkFn(w.root, nil, errors.Wrapf(err, "walk: %q", w.root))
+			return w.walkFn(w.root, nil, fmt.Errorf("walk: %q: %w", w.root, err))
 		}
 		fi = info.(FileMetaInfo)
 	}
@@ -192,7 +192,7 @@ func (w *Walkway) walk(path string, info FileMetaInfo, dirEntries []FileMetaInfo
 			if w.checkErr(path, err) {
 				return nil
 			}
-			return walkFn(path, info, errors.Wrapf(err, "walk: open %q (%q)", path, w.root))
+			return walkFn(path, info, fmt.Errorf("walk: open %q (%q): %w", path, w.root, err))
 		}
 
 		fis, err := f.Readdir(-1)
@@ -201,7 +201,7 @@ func (w *Walkway) walk(path string, info FileMetaInfo, dirEntries []FileMetaInfo
 			if w.checkErr(filename, err) {
 				return nil
 			}
-			return walkFn(path, info, errors.Wrap(err, "walk: Readdir"))
+			return walkFn(path, info, fmt.Errorf("walk: Readdir: %w", err))
 		}
 
 		dirEntries = fileInfosToFileMetaInfos(fis)