From 1730b7da42dd6f011017798d213da5ca71f3881b Mon Sep 17 00:00:00 2001
From: Mathieu Barbin <mathieu.barbin@gmail.com>
Date: Fri, 14 Feb 2025 12:22:51 +0100
Subject: [PATCH] Simplify dependencies in this gen-dune

---
 test/bop2c/gen-dune/dune    |  5 +++--
 test/bop2c/gen-dune/main.ml | 27 ++++++++++++++++-----------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/test/bop2c/gen-dune/dune b/test/bop2c/gen-dune/dune
index 5ef242c..ed81b4d 100644
--- a/test/bop2c/gen-dune/dune
+++ b/test/bop2c/gen-dune/dune
@@ -9,14 +9,15 @@
   -open
   Base
   -open
+  Fpath_base
+  -open
   Cmdlang)
  (libraries
   auto-format
   base
   cmdlang
   cmdlang-cmdliner-runner
-  eio
-  eio_main
+  fpath-base
   parsing-utils)
  (lint
   (pps ppx_js_style -check-doc-comments))
diff --git a/test/bop2c/gen-dune/main.ml b/test/bop2c/gen-dune/main.ml
index 91e0127..e62539d 100644
--- a/test/bop2c/gen-dune/main.ml
+++ b/test/bop2c/gen-dune/main.ml
@@ -8,22 +8,27 @@
    ]}
 *)
 
+let find_files_in_cwd_by_extensions ~cwd ~extensions =
+  Stdlib.Sys.readdir cwd
+  |> Array.map ~f:Fpath.v
+  |> Array.to_list
+  |> List.filter ~f:(fun file ->
+    Stdlib.Sys.is_regular_file (Fpath.to_string file)
+    && List.exists extensions ~f:(fun extension -> Fpath.has_ext extension file))
+  |> List.sort ~compare:Fpath.compare
+;;
+
 let gen_dune_cmd =
   Command.make
     ~summary:
       "generate dune stanza for all c files present in the cwd to be generated by bopkit"
     (let%map_open.Command () = Arg.return () in
-     Eio_main.run
-     @@ fun env ->
-     let files =
-       Auto_format.find_files_in_cwd_by_extensions
-         ~cwd:(Eio.Stdenv.cwd env)
-         ~extensions:[ "bop" ]
-     in
+     let cwd = Stdlib.Sys.getcwd () in
+     let files = find_files_in_cwd_by_extensions ~cwd ~extensions:[ "bop" ] in
      let generate_rules ~file =
-       let file_prefix = Stdlib.Filename.chop_extension file in
+       let file_prefix = Fpath.rem_ext file in
        let open Sexp in
-       let c_file = file_prefix ^ ".c" in
+       let c_file = Fpath.to_string file_prefix ^ ".c" in
        let list s = List s
        and atom s = Atom s in
        let atoms s = List.map s ~f:atom in
@@ -42,7 +47,7 @@ let gen_dune_cmd =
                        [ atom "run"
                        ; atom "%{bin:bopkit}"
                        ; atom "bop2c"
-                       ; atom (Printf.sprintf "%%{dep:%s}" file)
+                       ; atom (Printf.sprintf "%%{dep:%s}" (Fpath.to_string file))
                        ]
                    ]
                ]
@@ -51,7 +56,7 @@ let gen_dune_cmd =
        let gcc =
          list
            [ atom "rule"
-           ; list (atoms [ "target"; file_prefix ^ ".exe" ])
+           ; list (atoms [ "target"; Fpath.to_string file_prefix ^ ".exe" ])
            ; list
                [ atom "action"
                ; list