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ocaml

18 indexed repositories · View on GitHub

ocaml
The core OCaml system: compilers, runtime system, base libraries

OCaml · 6565 stars
dune
A composable build system for OCaml.

OCaml · 1915 stars
merlin
Context sensitive completion for OCaml in Vim and Emacs

OCaml · 1706 stars
opam
opam is a source-based package manager. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git...

OCaml · 1380 stars
ocaml-lsp
OCaml Language Server Protocol implementation

OCaml · 909 stars
opam-repository
Main public package repository for opam, the source package manager of OCaml.

588 stars
tuareg
Emacs OCaml mode

Emacs Lisp · 395 stars
odoc
Documentation compiler for OCaml

OCaml · 355 stars
ocaml-re
Pure OCaml regular expressions, with support for Perl and POSIX-style strings

OCaml · 260 stars
setup-ocaml
GitHub Action for the OCaml programming language

TypeScript · 228 stars
ocaml.org
The official OCaml website.

Markdown · 192 stars
ocamlbuild
The legacy OCamlbuild build manager

OCaml · 133 stars
flexdll
a dlopen-like API for Windows

OCaml · 115 stars
ocamlfind
The OCaml findlib library manager

OCaml · 47 stars
infrastructure
WIki to hold the information about the machine resources available to OCaml.org

HTML · 42 stars
security-advisories
Advisories from the OCaml Security team

16 stars
platform-blog
Repository for the Platform blog

14 stars
opam-repository-archive
Archived packages from the ocaml/opam repository

3 stars

Beginner friendly Everything

Open All

Design a CLI interface for discretionary tools Open

dev tools package management

Difficulty 5/5 Over a week Newbie friendliness 25/100

ocaml/dune#16430 · Opened Sep 18, 2026
Proposal: host an OCaml documentation (and dependency) MCP server Open

discussion enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

ocaml/ocaml.org#3775 · 1 comment · Opened Sep 18, 2026
Handle `ocamllex` warnings (OCaml 5.6+) Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

ocaml/dune#16429 · Opened Sep 18, 2026
opam 2.6.0 ignores git system/global config, suggest using envvar Open

AREA: DOCUMENTATION

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

ocaml/opam#7152 · 4 comments · Opened Sep 18, 2026
Atom feed emits only relative URLs (regression of #12) Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

ocaml/platform-blog#128 · Opened Sep 18, 2026
Clarify ambiguity in "Character literals" documentation regarding regular-char and UTF-8 Open

documentation-wish

Difficulty 1/5 Under an hour Newbie friendliness 90/100

ocaml/ocaml#15082 · Opened Sep 18, 2026
Bot idea from winget-pkgs Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ocaml/opam-repository#30766 · 2 reactions · Opened Sep 17, 2026
Change in behavior on index.tar.gz with leading slash Open

CONSIDER CLOSING

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ocaml/opam#7149 · 1 comment · Opened Sep 17, 2026
Dune installed via `opam` crashes on `dune init` with SIGSEGV on macOS Open

macos needs-investigation

Difficulty 3/5 1-2 days Newbie friendliness 64/100

ocaml/dune#16417 · 3 comments · Opened Sep 16, 2026
Sandboxes are not cleared when dune is interrupted Open

engine sandboxing

Difficulty 3/5 1-2 days Newbie friendliness 55/100

ocaml/dune#16416 · Opened Sep 16, 2026
Runtime_events producer: missing bounds check on user event write Open

ocaml/ocaml#15074 · 2 comments · 1 assignee · Opened Sep 15, 2026
Dune should pass the `-Werror=unguarded-availability-new` warning Open

c-bindings

Difficulty 4/5 3-5 days Newbie friendliness 52/100

ocaml/dune#16413 · Opened Sep 15, 2026
Runtime_events and exceptions from User event decoders Open

ocaml/ocaml#15072 · 3 comments · 1 assignee · Opened Sep 15, 2026
Lots of zombies maybe due to dune not reaping its children properly Open

needs-investigation

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ocaml/dune#16409 · Opened Sep 14, 2026
opam pin edit removes url.checksum Open

KIND: BUG

Difficulty 3/5 1-2 days Newbie friendliness 65/100

ocaml/opam#7143 · Opened Sep 14, 2026
`OpamSolution.fuzzy_name` seems to do unnecessary computations Open

AREA: PERFORMANCE

Difficulty 3/5 1-2 days Newbie friendliness 62/100

ocaml/opam#7141 · 2 comments · Opened Sep 14, 2026
Investigate landlock(7) as a replacement to bubblewrap Open

AREA: SANDBOX

Difficulty 5/5 Over a week Newbie friendliness 35/100

ocaml/opam#7140 · Opened Sep 13, 2026
Document "dune mode" for odoc_driver Open

Difficulty 1/5 Under an hour Newbie friendliness 90/100

ocaml/odoc#1492 · Opened Sep 13, 2026
odoc_driver doesn't automatically build docs for dependencies in odoc-config.sexp Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

ocaml/odoc#1491 · Opened Sep 13, 2026
Optional dependencies for packages Open

Difficulty 3/5 1-2 days Newbie friendliness 62/100

ocaml/ocaml.org#3768 · Opened Sep 12, 2026
`generate_opam_files` broken in 3.24 Open

build

Difficulty 3/5 1-2 days Newbie friendliness 65/100

ocaml/dune#16375 · 6 comments · Opened Sep 12, 2026
Fix `dup3`, `pipe2` detection with macOS 27 SDK leading to a crash Open

ocaml/ocaml#15067 · 1 comment · 1 assignee · Opened Sep 11, 2026
Record-field completions discard deprecation attributes Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

ocaml/merlin#2123 · Opened Sep 10, 2026
odoc: can't link between packages Open

odoc

Difficulty 3/5 1-2 days Newbie friendliness 68/100

ocaml/dune#16363 · 11 comments · Opened Sep 10, 2026
Wrong documentation for operators in completions (`completionItem/resolve`) Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

ocaml/ocaml-lsp#2202 · 3 comments · Opened Sep 10, 2026
merge `flexdll` within the compiler repository Open

ocaml/ocaml#15058 · 1 assignee · Opened Sep 10, 2026
Re-exporting ADT gets rejected due to arity change Open

ocaml/ocaml#15053 · 2 comments · 1 assignee · Opened Sep 9, 2026
Doc-page render downloads full odoc search index for a digest → OOM (awso 371 MB index) Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

ocaml/ocaml.org#3765 · 1 comment · Opened Sep 8, 2026
503 on ocaml.org sometimes Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ocaml/infrastructure#192 · 3 comments · Opened Sep 8, 2026
directory completion candidates still generate spaces Open

cli

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

ocaml/dune#16357 · Opened Sep 8, 2026
Go to method definition Open

Kind/Bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

ocaml/merlin#2122 · Opened Sep 8, 2026
reftest: add `<pkg:` helper that doesn't launch an `opam update` Open

AREA: TEST

Difficulty 3/5 1-2 days Newbie friendliness 66/100

ocaml/opam#7133 · 2 comments · Opened Sep 8, 2026
Unlisted extra-files from the files/ directory aren't copied to the build directory when installing packages from a 1.2 repository Open

AREA: FORMAT KIND: BUG

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ocaml/opam#7132 · 1 comment · Opened Sep 8, 2026
Compiler support timeline proposal (up to 2030) Open

policy discussion

Difficulty 5/5 Over a week Newbie friendliness 25/100

ocaml/opam-repository#30671 · 2 comments · 4 reactions · Opened Sep 7, 2026
testsuite/tests/afl-instrumentation always fails if AFL is installed but OCaml is not configured with --with-afl Open

testsuite

ocaml/ocaml#15046 · 1 assignee · Opened Sep 7, 2026
FreeBSD workers may timeout, even on small tasks Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ocaml/opam-repository#30659 · Opened Sep 6, 2026
Stop-the-world barriers take seconds on Windows when a domain repeatedly enters and leaves a blocking section Open

multicore Performance runtime-system

ocaml/ocaml#15042 · 8 comments · 1 assignee · Opened Sep 5, 2026
Allow specifying per-mode linker flags Open

build

Difficulty 3/5 1-2 days Newbie friendliness 72/100

ocaml/dune#16324 · 4 comments · Opened Sep 4, 2026
In-prefix tests fail in Windows CI Open

ocaml/ocaml#15040 · 1 assignee · Opened Sep 4, 2026
Semantics of `--no-build` when package management is enabled Open

package management

Difficulty 5/5 Over a week Newbie friendliness 30/100

ocaml/dune#16312 · Opened Sep 3, 2026
Allow test to fail on compilation Open

proposal test

Difficulty 4/5 3-5 days Newbie friendliness 52/100

ocaml/dune#16311 · 1 comment · Opened Sep 3, 2026
invalid unwind info in ocamlopt binaries in the stack reallocation path Open

ocaml/ocaml#15037 · 9 comments · 1 assignee · Opened Sep 2, 2026
`describe workspace` should include melange targets Open

describe melange

Difficulty 3/5 1-2 days Newbie friendliness 68/100

ocaml/dune#16299 · Opened Sep 2, 2026
Notify on low-end hardware to set `jobs=1` Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

ocaml/opam#7126 · Opened Sep 2, 2026
Use immutable values for system `environment` Open

AREA: API

Difficulty 5/5 Over a week Newbie friendliness 35/100

ocaml/opam#7125 · Opened Sep 2, 2026
opam install --save Open

KIND: FEATURE WISH

Difficulty 5/5 Over a week Newbie friendliness 25/100

ocaml/opam#7123 · 2 comments · Opened Sep 1, 2026
Exit with distinct code when the global lock blocks execution Open

cli

ocaml/dune#16289 · 1 comment · 1 reaction · 1 assignee · Opened Aug 31, 2026
Split lint checks into ""important"" checks and ""cosmetic"" checks Open

AREA: UI KIND: FEATURE WISH

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ocaml/opam#7118 · Opened Aug 31, 2026
opam pin add does not run the linter whereas opam install does Open

AREA: UI

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ocaml/opam#7117 · Opened Aug 31, 2026
Opam should have opam-audit integrated Open

KIND: FEATURE WISH

Difficulty 5/5 Over a week Newbie friendliness 30/100

ocaml/opam#7113 · 8 comments · Opened Aug 31, 2026

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