lock: add '--keep-local' argument to add local pins (unresolved ones)…

… to 'pin-depends:' field

master_changes.md

@@ -85,6 +85,7 @@ users)
 
 ## Lock
   * [BUG] Fix `pin-depends` for `with-*` dependencies [#5471 @rjbou - fix #5428]
+  * [NEW] Add `--keep-local` to keep (unresolved) local pins in `pin-depends` field [#6411 @rjbou - fix #4897]
 
 ## Clean
 
@@ -225,6 +226,7 @@ users)
   * `OpamArg`: export `require_checksums` and `no_checksums`, that are shared with `build_options` [#5563 @rjbou]
   * `OpamArg.hash_kinds`: was added [#5960 @kit-ty-kate]
   * `OpamRepositoryCommand.switch_repos`: expose the function [#5014 @kit-ty-kate]
+  * `OpamLockCommand.lock_opam`: add `?keep_local` argument to add (unresolved) local pins to pin-depends [#6411 @rjbou]
 
 ## opam-repository
   * `OpamDownload.get_output`: fix `wget` option for `POST` requests [#6036 @rjbou]

src/client/opamCommands.ml

@@ -4392,9 +4392,10 @@ let lock cli =
         fixed and the same filter is on all dependencies that are added from \
         them";
     `P "- $(i,pin-depends) are kept and new ones are added if in the \
-        dependencies some packages are pinned ";
+        dependencies some packages are pinned";
     `P "- pins are resolved: if a package is locally pinned, opam tries to get \
-        its remote url and branch, and sets this as the target URL";
+        its remote url and branch, and sets this as the target URL; otherwise \
+        it ignore them. You can use $(i,--keep-local) to keep them.";
     `S Manpage.s_arguments;
     `S Manpage.s_options;
   ]
@@ -4404,7 +4405,11 @@ let lock cli =
       "Only lock direct dependencies, rather than the whole dependency tree."
   in
   let lock_suffix = OpamArg.lock_suffix cli in
-  let lock global_options only_direct lock_suffix atom_locs () =
+  let keep_local_flag =
+    mk_flag ~cli (cli_from cli2_4) ["keep-local"]
+      "Do not discard local pins from pin-depends."
+  in
+  let lock global_options only_direct lock_suffix keep_local atom_locs () =
     apply_global_options cli global_options;
     OpamGlobalState.with_ `Lock_none @@ fun gt ->
     OpamSwitchState.with_ `Lock_none gt @@ fun st ->
@@ -4420,7 +4425,9 @@ let lock cli =
     let pkg_done =
       OpamPackage.Set.fold (fun nv msgs ->
           let opam = OpamSwitchState.opam st nv in
-          let locked = OpamLockCommand.lock_opam ~only_direct st opam in
+          let locked =
+            OpamLockCommand.lock_opam ~only_direct ~keep_local st opam
+          in
           let locked_fname =
             OpamFilename.add_extension
               (OpamFilename.of_string (OpamPackage.name_to_string nv))
@@ -4443,7 +4450,7 @@ let lock cli =
   in
   mk_command  ~cli (cli_from cli2_1) "lock" ~doc ~man
     Term.(const lock $global_options cli $only_direct_flag $lock_suffix
-          $atom_or_local_list)
+          $keep_local_flag $atom_or_local_list)
 
 (* HELP *)
 let help =

src/client/opamLockCommand.ml

@@ -128,7 +128,7 @@ let get_git_url url nv dir =
        (OpamPackage.to_string nv);
      None)
 
-let lock_opam ?(only_direct=false) st opam =
+let lock_opam ?(only_direct=false) ?(keep_local=false) st opam =
   let nv = OpamFile.OPAM.package opam in
   (* Depends *)
   let all_depends =
@@ -294,9 +294,14 @@ let lock_opam ?(only_direct=false) st opam =
           match OpamUrl.local_dir u with
           | Some d ->
             let local_warn () =
-              OpamConsole.warning "Dependency %s is pinned to local target %s"
-                (OpamPackage.to_string nv) (OpamUrl.to_string u);
-              acc
+              if keep_local then
+                (OpamConsole.note "Dependency %s is pinned to local target %s, keeping it."
+                   (OpamPackage.to_string nv) (OpamUrl.to_string u);
+                 (nv,u)::acc)
+              else
+                (OpamConsole.warning "Dependency %s is pinned to local target %s"
+                   (OpamPackage.to_string nv) (OpamUrl.to_string u);
+                 acc)
             in
             (match u.OpamUrl.backend with
              | #OpamUrl.version_control ->

src/client/opamLockCommand.mli

@@ -21,5 +21,11 @@ val select_packages:
   [ `Atom of atom | `Filename of filename | `Dirname of dirname ] list ->
   'a switch_state -> 'a switch_state * package_set
 
-(** Returns the locked opam file, according its depends, depopts, and pins. *)
-val lock_opam: ?only_direct:bool -> 'a switch_state -> OpamFile.OPAM.t -> OpamFile.OPAM.t
+(** Returns the locked opam file, according its depends, depopts, and pins.
+    If [only_direct] is set to true, it only adds direct dependencies specified
+    in the opam file. If [keep_local] is set to true, local pins that can not
+    be resolved to a distant url are added with their local path in
+    'pin_depends:' field. *)
+val lock_opam:
+  ?only_direct:bool -> ?keep_local:bool -> 'a switch_state -> OpamFile.OPAM.t
+  -> OpamFile.OPAM.t

tests/reftests/lock.test

@@ -1318,3 +1318,43 @@ opam-version: "2.0"
 pin-depends: [["a-doc-dep.dev" "git+https://github.com/dbuenzli/cmdliner#e8f8890fe48"] ["a-simple-dep.dev" "git+https://github.com/dbuenzli/cmdliner#f239981642a"] ["a-test-dep.dev" "git+https://github.com/dbuenzli/cmdliner#1de361182ab"]]
 synopsis: "A word"
 version: "dev"
+### : Keep local pins as pin-depends
+### <pin:local-one/local-one.opam>
+opam-version: "2.0"
+### <pin:local-two/local-two.opam>
+opam-version: "2.0"
+### <pkg:distant-x.1>
+opam-version: "2.0"
+depends: [ "local-one" "local-two" ]
+### opam switch create locality --empty
+### opam pin ./local-one -n
+[NOTE] Package local-one does not exist in opam repositories registered in the current switch.
+local-one is now pinned to file://${BASEDIR}/local-one (version dev)
+### opam pin ./local-two -n
+[NOTE] Package local-two does not exist in opam repositories registered in the current switch.
+local-two is now pinned to file://${BASEDIR}/local-two (version dev)
+### opam install distant-x
+The following actions will be performed:
+=== install 3 packages
+  - install distant-x 1
+  - install local-one dev (pinned) [required by distant-x]
+  - install local-two dev (pinned) [required by distant-x]
+
+<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+-> retrieved local-one.dev  (file://${BASEDIR}/local-one)
+-> installed local-one.dev
+-> retrieved local-two.dev  (file://${BASEDIR}/local-two)
+-> installed local-two.dev
+-> installed distant-x.1
+Done.
+### opam lock distant-x --keep-local
+[NOTE] Dependency local-one.dev is pinned to local target file://${BASEDIR}/local-one, keeping it.
+[NOTE] Dependency local-two.dev is pinned to local target file://${BASEDIR}/local-two, keeping it.
+Generated lock files for:
+  - distant-x.1: ${BASEDIR}/distant-x.opam.locked
+### opam-cat distant-x.opam.locked
+depends: ["local-one" {= "dev"} "local-two" {= "dev"}]
+name: "distant-x"
+opam-version: "2.0"
+pin-depends: [["local-one.dev" "file://${BASEDIR}/local-one"] ["local-two.dev" "file://${BASEDIR}/local-two"]]
+version: "1"