Extract lint functionality as a separate library

Co-authored-by: Shon Feder <shon.feder@gmail.com>

opam-ci-check-lint.opam

@@ -0,0 +1,41 @@
+opam-version: "2.0"
+synopsis:
+  "Library to lint opam files submitted to the opam repository"
+description:
+  "opam-ci-check-lint exposes the lint functionality used in the opam repo CI and opam-ci-check. It can be used in other packages such as opam publishing tools to ensure that the published package opam files are correct."
+maintainer: [
+  "Puneeth Chaganti <punchagan@muse-amuse.in>"
+  "Shon Feder <shon.feder@gmail.com>"
+]
+authors: [
+  "Puneeth Chaganti <punchagan@muse-amuse.in>"
+  "Shon Feder <shon.feder@gmail.com>"
+]
+license: "Apache-2.0"
+tags: ["opam" "ci" "lint"]
+homepage: "https://github.com/ocurrent/opam-repo-ci/tree/master/opam-ci-check"
+doc: "https://www.ocurrent.org/opam-repo-ci/opam-ci-check-lint/index.html"
+bug-reports: "https://github.com/ocurrent/opam-repo-ci/issues"
+depends: [
+  "ocaml" {>= "4.14.0"}
+  "dune" {>= "3.16"}
+  "sexplib"
+  "opam-state" {>= "2.3.0~alpha1"}
+  "opam-format" {>= "2.3.0~alpha1"}
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/ocurrent/opam-repo-ci.git"

opam-ci-check/lib/dune

@@ -3,4 +3,12 @@
  (public_name opam-ci-check)
  (preprocess
   (pps ppx_deriving.std ppx_deriving_yojson))
- (libraries opam-client sexplib bos fpath str ocaml-version obuilder-spec))
+ (libraries
+  opam-client
+  sexplib
+  bos
+  fpath
+  str
+  ocaml-version
+  obuilder-spec
+  opam-ci-check-lint))

opam-ci-check/lib/opam_ci_check.ml

@@ -4,10 +4,10 @@
 
 module Revdeps = Revdeps
 module Test = Test
-module Lint = Lint
+module Lint = Opam_ci_check_lint
+module Opam_helpers = Opam_ci_check_lint.Opam_helpers
 module Opam_build = Opam_build
 module Variant = Variant
 module Opam_version = Opam_version
 module Compiler_version = Compiler_version
 module Spec = Spec
-module Opam_helpers = Opam_helpers

opam-ci-check/lint/dune

@@ -0,0 +1,4 @@
+(library
+ (name opam_ci_check_lint)
+ (public_name opam-ci-check-lint)
+ (libraries opam-state opam-format sexplib str))

opam-ci-check/lib/lint.ml → opam-ci-check/lint/opam_ci_check_lint.ml

@@ -2,7 +2,8 @@
  * Copyright (c) 2024 Puneeth Chaganti <punchagan@muse-amuse.in>, Shon Feder <shon.feder@gmail.com>, Tarides <contact@tarides.com>
  *)
 
-module O = Opam_helpers
+module Opam_helpers = Opam_helpers
+
 
 let ( // ) = Filename.concat
 let get_files dir = dir |> Sys.readdir |> Array.to_list
@@ -303,7 +304,7 @@ module Checks = struct
     | _ -> false
 
   let check_package_dir ~opam_repo_dir ~pkg _opam =
-    let dir = O.path_from_pkg ~opam_repo_dir pkg in
+    let dir = Opam_helpers.path_from_pkg ~opam_repo_dir pkg in
     let check_file = function
       | "opam" ->
           let path = dir // "opam" in

opam-ci-check/lib/lint.mli → opam-ci-check/lint/opam_ci_check_lint.mli

@@ -2,6 +2,10 @@
  * Copyright (c) 2024 Puneeth Chaganti <punchagan@muse-amuse.in>, Shon Feder <shon.feder@gmail.com>, Tarides <contact@tarides.com>
  *)
 
+module Opam_helpers : sig
+  val path_from_pkg : opam_repo_dir:string -> OpamPackage.t -> string
+end
+
 include module type of Lint_error
 
 module Checks : sig