feat: add a package for Debian ash that provides a /bin/sh symlink

modules/radix/packages/shells.scm

@@ -0,0 +1,27 @@
+(define-module (radix packages shells)
+  #:use-module (gnu)
+  #:use-module (guix packages)
+  #:use-module (guix gexp)
+  #:use-module (gnu packages shells))
+
+(define-public dash-next
+  (package
+   (inherit dash)
+   (arguments
+    (list #:configure-flags
+          #~(list "--with-libedit")
+          #:phases
+          #~(modify-phases %standard-phases
+              (add-after 'install 'create-/bin/sh
+                (lambda _
+                  (symlink (string-append #$output "/bin/dash")
+                           (string-append #$output "/bin/sh")))))))
+    (description
+     "Dash is a POSIX-compliant @command{/bin/sh} implementation that aims to be
+as small as possible, often without sacrificing speed.  It is faster than the
+GNU Bourne-Again Shell (@command{bash}) at most scripted tasks.  Dash is a
+direct descendant of NetBSD's Almquist Shell (@command{ash}). This package
+provides, adtionally to @command{/bin/dash} a symlink to it under
+@command{/bin/sh}.")))
+
+dash-next