Release of magic version 0.7.4

Compatibility with OCaml 5.

packages/magic/magic.0.7.4/opam

@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "Christophe Troestler <[email protected]>"
+authors: [ "Christophe Troestler <[email protected]>" ]
+license: "GPL-3.0-or-later WITH OCaml-LGPL-linking-exception"
+synopsis: "Bindings to libmagic"
+homepage: "https://github.com/Chris00/ocaml-magic"
+dev-repo: "git+https://github.com/Chris00/ocaml-magic.git"
+bug-reports: "https://github.com/Chris00/ocaml-magic/issues"
+build: [
+  ["./configure"]
+  [make]
+]
+install: [make "install"]
+remove: [
+  ["ocamlfind" "remove" "magic"]
+]
+depends: [
+  "ocamlfind" {build}
+]
+depexts: [
+  ["libmagic-dev"] {os-family = "debian"}
+  ["file-devel"] {os-distribution = "centos"}
+  ["file-devel"] {os-distribution = "fedora"}
+  ["file-devel"] {os-family = "suse" | os-family = "opensuse"}
+  ["file-dev"] {os-family = "alpine"}
+  ["file"] {os-family = "arch"}
+  ["libmagic-devel"] {os-distribution = "mageia"}
+  ["file"] {os = "freebsd"}
+  ["file"] {os = "openbsd"}
+  ["libmagic"] {os = "macos" & os-distribution = "homebrew"}
+]
+available: [ os != "win32" & os != "macos" ]
+url {
+  src: "https://github.com/Chris00/ocaml-magic/releases/download/v0.7.4/ocaml-magic-0.7.4.tar.gz"
+  checksum: [
+    "sha256=025d68bc9b6a7f9987defd8157942ffdcba83849e312bf2f890e93bbb3932013"
+    "md5=e11b0137eb0c9acf78a139907b243255"
+  ]
+}