Deprecate smart_print package name in favor of smart-print

Dune does not like the fact that the public name of
smart_print library is different from the corresponding
opam file (it contains a hyphen instead of an underscore)

README.md

@@ -20,9 +20,8 @@ Else download the sources and run:
     $ make
     # make install
 
-You can also `make doc` and `make test`. To compile your programs with SmartPrint:
-
-    $ ocamlbuild my_program.native -libs smart_print
+You can also `make doc` and `make test`. To compile your programs with SmartPrint
+add `smart-print` to the `libraries` stanza in your `dune` file(s).
 
 Do not forget to open the SmartPrint module in your code:
 
@@ -40,7 +39,7 @@ Open an OCaml toplevel:
 
 ```ocaml
 #use "topfind";;
-#require "smart_print";;
+#require "smart-print";;
 open SmartPrint;;
 ```
 

dune

@@ -1,10 +1,14 @@
 (library
  (name smart_print)
  (wrapped false)
- (public_name smart_print)
+ (public_name smart-print)
  (modules smartPrint)
  (synopsis "SmartPrint pretty-printing library"))
 
+(deprecated_library_name
+ (old_public_name smart_print)
+ (new_public_name smart-print))
+
 (test
   (name test)
   (libraries smart_print)

dune-project

@@ -1,2 +1,4 @@
-(lang dune 1.0)
-(name smart-print)
+(lang dune 2.0)
+(package
+  (name smart-print)
+  (deprecated_package_names smart_print))

smart-print.opam

@@ -9,7 +9,7 @@ license: "BSD-3-Clause"
 
 depends: [
   "ocaml" {>= "4.00.0"}
-  "dune" {>= 1.0}
+  "dune" {>= "2.0"}
   "odoc" {with-doc}
 ]
 build: make