Install an empty library (compat with dune3)

Dune 2 assumes that there's a "uchar" library installed by the compiler but that is not true so it was removed in ocaml/dune#5260. This means that a sourceless uchar package does not work: some sources are necessary for `(libraries ... uchar)` to work. This 0.0.2+dune3 version installs an empty library instead.
emillon · Feb 28, 2022 · 2baeb02 · 2baeb02
1 parent 1a5cd87
commit 2baeb02
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diff --git a/dune b/dune
@@ -0,0 +1,4 @@
+(library
+ (public_name uchar)
+ (wrapped false)
+ (modules))
diff --git a/dune-project b/dune-project
@@ -0,0 +1 @@
+(lang dune 1.1)
diff --git a/opam → uchar.opam b/opam → uchar.opam
@@ -7,7 +7,7 @@ dev-repo: "https://github.com/ocaml/uchar.git"
 bug-reports: "https://github.com/ocaml/uchar/issues"
 tags: [ "text" "character" "unicode" "compatibility" "org:ocaml.org" ]
 license: "typeof OCaml system"
-depends: [ "dune" "ocaml" {>= "4.03"} ]
+depends: [ "dune" {>= "1.1"} "ocaml" {>= "4.03"} ]
 synopsis: "Dummy but non virtual package to satisfy both opam-monorepo and opam"
 url {
   src: "git+https://github.com/dune-universe/uchar.git#dune-universe-v0.0.2"