ppxlib 0.2.1

Error log

The package failed to build. The error log from opam follows.

Opam plugin "depext" may require upgrading/reinstalling. Reinstall the plugin on the current switch? [Y/n] y
The following actions will be performed:
  - recompile opam-depext 1.2.3

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved opam-depext.1.2.3  (cached)
-> removed   opam-depext.1.2.3
-> installed opam-depext.1.2.3
Done.

<><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
=> opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
# Run eval $(opam env) to update the current shell environment

<><> Carrying on to "opam depext -viy ppxlib.0.2.1 stdio.v0.13.0 sexplib0.v0.13.0 result.1.5 ppx_derivers.1.2.1 ocaml-migrate-parsetree.1.8.0 ocaml-compiler-libs.v0.12.3 dune-configurator.1.0.0 dune.1.11.4 base.v0.13.2" 

Since version 2.1, opam now handles external dependencies alongside OCaml ones, and the `depext` plugin interface is provided for backwards compatibility only. Consider using your usual `opam install` command to install both OCaml and system dependencies, or `opam install <pkg> --depext-only` if you want to only install external dependencies.
# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
# No extra OS packages requirements found.
[NOTE] Package dune is already installed (current version is 1.11.4).
The following actions will be performed:
  - install dune-configurator       1.0.0
  - install ppx_derivers            1.2.1
  - install result                  1.5
  - install sexplib0                v0.13.0
  - install ocaml-compiler-libs     v0.12.3
  - install ocaml-migrate-parsetree 1.8.0
  - install base                    v0.13.2
  - install stdio                   v0.13.0
  - install ppxlib                  0.2.1
===== 9 to install =====

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  1/27:
Processing  2/27:
Processing  3/27:
Processing  4/27:
Processing  5/27:
-> installed dune-configurator.1.0.0
Processing  6/27:
-> retrieved base.v0.13.2  (cached)
Processing  7/27:
-> retrieved ocaml-compiler-libs.v0.12.3  (cached)
Processing  8/27: [ppxlib.0.2.1: http]
Processing  9/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build]
-> retrieved ocaml-migrate-parsetree.1.8.0  (cached)
Processing 10/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build]
-> retrieved ppx_derivers.1.2.1  (cached)
Processing 11/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build]
Processing 12/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build]
-> retrieved result.1.5  (cached)
Processing 13/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build]
Processing 14/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build] [result: dune build]
-> retrieved sexplib0.v0.13.0  (cached)
Processing 15/27: [ppxlib.0.2.1: http] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build] [result: dune build] [sexplib0: dune build]
-> retrieved stdio.v0.13.0  (cached)
[ERROR] Failed to get sources of ppxlib.0.2.1: curl error code 404
Processing 15/27: [ocaml-compiler-libs: dune build] [ppx_derivers: dune build] [result: dune build] [sexplib0: dune build]
-> compiled  ppx_derivers.1.2.1
Processing 15/27: [ocaml-compiler-libs: dune build] [result: dune build] [sexplib0: dune build]
-> installed ppx_derivers.1.2.1
Processing 16/27: [ocaml-compiler-libs: dune build] [result: dune build] [sexplib0: dune build]
-> compiled  result.1.5
Processing 16/27: [ocaml-compiler-libs: dune build] [sexplib0: dune build]
-> installed result.1.5
Processing 17/27: [ocaml-compiler-libs: dune build] [sexplib0: dune build]
Processing 18/27: [ocaml-compiler-libs: dune build] [ocaml-migrate-parsetree: dune build] [sexplib0: dune build]
-> compiled  sexplib0.v0.13.0
Processing 18/27: [ocaml-compiler-libs: dune build] [ocaml-migrate-parsetree: dune build]
-> installed sexplib0.v0.13.0
Processing 19/27: [ocaml-compiler-libs: dune build] [ocaml-migrate-parsetree: dune build]
Processing 20/27: [base: dune build] [ocaml-compiler-libs: dune build] [ocaml-migrate-parsetree: dune build]
-       ocamlc src/ocaml_optcomp/.ocaml_optcomp.objs/byte/ocaml_optcomp.{cmi,cmo,cmt}
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 12, characters 42-56:
- Warning 49: no cmi file was found in path for module Available_regs
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 85, characters 42-62:
- Warning 49: no cmi file was found in path for module Reg_availability_set
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 86, characters 42-61:
- Warning 49: no cmi file was found in path for module Reg_with_debug_info
-     ocamlopt src/ocaml_optcomp/.ocaml_optcomp.objs/native/ocaml_optcomp.{cmx,o}
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 12, characters 42-56:
- Warning 49: no cmi file was found in path for module Available_regs
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 85, characters 42-62:
- Warning 49: no cmi file was found in path for module Reg_availability_set
- File "src/ocaml_optcomp/ocaml_optcomp.ml", line 86, characters 42-61:
- Warning 49: no cmi file was found in path for module Reg_with_debug_info
-> compiled  ocaml-compiler-libs.v0.12.3
Processing 20/27: [base: dune build] [ocaml-migrate-parsetree: dune build]
-> installed ocaml-compiler-libs.v0.12.3
Processing 21/27: [base: dune build] [ocaml-migrate-parsetree: dune build]
-> compiled  ocaml-migrate-parsetree.1.8.0
Processing 21/27: [base: dune build]
-> installed ocaml-migrate-parsetree.1.8.0
Processing 22/27: [base: dune build]
+ /home/opam/.opam/4.07/bin/dune "build" "-p" "base" "-j" "39" (CWD=/home/opam/.opam/4.07/.opam-switch/build/base.v0.13.2)
-> compiled  base.v0.13.2
-> installed base.v0.13.2
Processing 24/27: [stdio: dune build]
+ /home/opam/.opam/4.07/bin/dune "build" "-p" "stdio" "-j" "39" (CWD=/home/opam/.opam/4.07/.opam-switch/build/stdio.v0.13.0)
-> compiled  stdio.v0.13.0
-> installed stdio.v0.13.0

#=== ERROR while fetching sources for ppxlib.0.2.1 ============================#
OpamSolution.Fetch_fail("https://github.com/ocaml-ppx/ppxlib/releases/download/0.2.1/ppxlib-0.2.1.tbz (curl: code 404 while downloading https://github.com/ocaml-ppx/ppxlib/releases/download/0.2.1/ppxlib-0.2.1.tbz)")


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - fetch ppxlib 0.2.1
+- 
+- The following changes have been performed
| - install base                    v0.13.2
| - install dune-configurator       1.0.0
| - install ocaml-compiler-libs     v0.12.3
| - install ocaml-migrate-parsetree 1.8.0
| - install ppx_derivers            1.2.1
| - install result                  1.5
| - install sexplib0                v0.13.0
| - install stdio                   v0.13.0
+- 
# Run eval $(opam env) to update the current shell environment

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/4.07/.opam-switch/backup/state-20240912203651.export"
'opam --cli=2.1 install ppxlib.0.2.1 stdio.v0.13.0 sexplib0.v0.13.0 result.1.5 ppx_derivers.1.2.1 ocaml-migrate-parsetree.1.8.0 ocaml-compiler-libs.v0.12.3 dune-configurator.1.0.0 dune.1.11.4 base.v0.13.2 --verbose --yes --confirm-level=unsafe-yes' failed.