David Sancho
@david.sancho.dev
Open Source UI infra at @ahrefs.bsky.social with OCaml
Made styled-ppx and server-reason-react
Working on reason-react / Melange / Reason
Made styled-ppx and server-reason-react
Working on reason-react / Melange / Reason
The future of programming: same as poker players with 24 tables at the same time, but with agents
November 12, 2025 at 11:00 AM
The future of programming: same as poker players with 24 tables at the same time, but with agents
Looking forward to next days for the OCaml and ML workshop @icfp_conference
October 15, 2025 at 5:57 PM
Looking forward to next days for the OCaml and ML workshop @icfp_conference
every great product has a gambling system, which is why I feel the endorphins from CI yoloing
October 15, 2025 at 12:46 PM
every great product has a gambling system, which is why I feel the endorphins from CI yoloing
Day 2 of hacking before ICFP
Finally finished odoc markdown backend support in dune, it should make release nicer documentation sites (docusaurus, vitepress, etc) or even github itself
Before (odoc html) After (odoc to markdown |> vitepress)
Finally finished odoc markdown backend support in dune, it should make release nicer documentation sites (docusaurus, vitepress, etc) or even github itself
Before (odoc html) After (odoc to markdown |> vitepress)
October 15, 2025 at 12:07 PM
Day 2 of hacking before ICFP
Finally finished odoc markdown backend support in dune, it should make release nicer documentation sites (docusaurus, vitepress, etc) or even github itself
Before (odoc html) After (odoc to markdown |> vitepress)
Finally finished odoc markdown backend support in dune, it should make release nicer documentation sites (docusaurus, vitepress, etc) or even github itself
Before (odoc html) After (odoc to markdown |> vitepress)
Day 1 of hacking before ICFP! 🐫
Releasing opam packages used to take me ~1 hour each time. So I automated it.
Now? On each new git tag → dune-release-action does everything (GitHub release + opam-repository PR).
Please use it and report issues github.com/davesnx/dun...
Releasing opam packages used to take me ~1 hour each time. So I automated it.
Now? On each new git tag → dune-release-action does everything (GitHub release + opam-repository PR).
Please use it and report issues github.com/davesnx/dun...
October 14, 2025 at 4:03 PM
Day 1 of hacking before ICFP! 🐫
Releasing opam packages used to take me ~1 hour each time. So I automated it.
Now? On each new git tag → dune-release-action does everything (GitHub release + opam-repository PR).
Please use it and report issues github.com/davesnx/dun...
Releasing opam packages used to take me ~1 hour each time. So I automated it.
Now? On each new git tag → dune-release-action does everything (GitHub release + opam-repository PR).
Please use it and report issues github.com/davesnx/dun...
github needs a spam PR filter right now. This is beyond ridiculous (and happens every month)
October 11, 2025 at 1:41 PM
github needs a spam PR filter right now. This is beyond ridiculous (and happens every month)
when Ruby devs are interested in OCaml, it's over, we are mainstream af
October 10, 2025 at 10:01 AM
when Ruby devs are interested in OCaml, it's over, we are mainstream af
One week until ICFP ✨ (in Singapore this year, btw)
Super excited. My 4th time attending (and a bunch of the ahrefs crew will be there too)
Should I organize a chill-run through the city?
Super excited. My 4th time attending (and a bunch of the ahrefs crew will be there too)
Should I organize a chill-run through the city?
October 5, 2025 at 9:39 AM
One week until ICFP ✨ (in Singapore this year, btw)
Super excited. My 4th time attending (and a bunch of the ahrefs crew will be there too)
Should I organize a chill-run through the city?
Super excited. My 4th time attending (and a bunch of the ahrefs crew will be there too)
Should I organize a chill-run through the city?
fun-ocaml tshirt goes harder this year 🔥🐪🌴
September 28, 2025 at 1:48 PM
fun-ocaml tshirt goes harder this year 🔥🐪🌴
Implemented atomic CSS when extracting in styled-ppx
bundle-size for atomic CSS vs not atomic CSS for a 200 pages site is insane
Each page increases the bundle for all page's styles (all classnames must be pushed). In atomic, the increase is just "the new properties" (if any)
x.com/davesnx/sta...
bundle-size for atomic CSS vs not atomic CSS for a 200 pages site is insane
Each page increases the bundle for all page's styles (all classnames must be pushed). In atomic, the increase is just "the new properties" (if any)
x.com/davesnx/sta...
September 26, 2025 at 5:48 PM
Implemented atomic CSS when extracting in styled-ppx
bundle-size for atomic CSS vs not atomic CSS for a 200 pages site is insane
Each page increases the bundle for all page's styles (all classnames must be pushed). In atomic, the increase is just "the new properties" (if any)
x.com/davesnx/sta...
bundle-size for atomic CSS vs not atomic CSS for a 200 pages site is insane
Each page increases the bundle for all page's styles (all classnames must be pushed). In atomic, the increase is just "the new properties" (if any)
x.com/davesnx/sta...
do you think it's based?
September 25, 2025 at 10:25 AM
do you think it's based?
me: "i'm too busy creating, can't release stuff now"
me later: "shit, that's the wrong mentality"
me later: "shit, that's the wrong mentality"
September 19, 2025 at 9:58 AM
me: "i'm too busy creating, can't release stuff now"
me later: "shit, that's the wrong mentality"
me later: "shit, that's the wrong mentality"
This is ready @FunOCaml
September 15, 2025 at 6:58 AM
This is ready @FunOCaml
with all the work with CSS extraction, I improved the error messaging system.
Multiple errors can be reported at once (the type-checker runs on each declaration!) and locations are mapped to the right value
Multiple errors can be reported at once (the type-checker runs on each declaration!) and locations are mapped to the right value
September 12, 2025 at 10:00 AM
with all the work with CSS extraction, I improved the error messaging system.
Multiple errors can be reported at once (the type-checker runs on each declaration!) and locations are mapped to the right value
Multiple errors can be reported at once (the type-checker runs on each declaration!) and locations are mapped to the right value
I'm implementing the supreme feature for styled-ppx (I have been postponing for years!)
Static CSS extraction at build time. No emotion runtime, minimal (or zero runtime) and everything dynamic via CSS variables.
Static CSS extraction at build time. No emotion runtime, minimal (or zero runtime) and everything dynamic via CSS variables.
September 11, 2025 at 10:35 AM
I'm implementing the supreme feature for styled-ppx (I have been postponing for years!)
Static CSS extraction at build time. No emotion runtime, minimal (or zero runtime) and everything dynamic via CSS variables.
Static CSS extraction at build time. No emotion runtime, minimal (or zero runtime) and everything dynamic via CSS variables.
claude code breaks the github UI
August 28, 2025 at 6:00 PM
claude code breaks the github UI
POV: you’re about to review the sloppiest code you’ve ever seen
August 28, 2025 at 3:59 PM
POV: you’re about to review the sloppiest code you’ve ever seen
them: "I'm a functional programmer, I love abbreviations, code clean makes me happy"
me: Sure, let's play a game
me: Sure, let's play a game
August 27, 2025 at 9:59 AM
them: "I'm a functional programmer, I love abbreviations, code clean makes me happy"
me: Sure, let's play a game
me: Sure, let's play a game
First time reading a paper about React
August 22, 2025 at 10:01 AM
First time reading a paper about React
TIL there's "whatever" and "any" in CSS, which styled-ppx's CSS parser doesn't support
used in
content: attr(<attr-name> <attr-type>? , <declaration-value>?)
used in
content: attr(<attr-name> <attr-type>? , <declaration-value>?)
August 22, 2025 at 8:19 AM
TIL there's "whatever" and "any" in CSS, which styled-ppx's CSS parser doesn't support
used in
content: attr(<attr-name> <attr-type>? , <declaration-value>?)
used in
content: attr(<attr-name> <attr-type>? , <declaration-value>?)
no cheating, post the last pic of your pet
August 19, 2025 at 9:28 PM
no cheating, post the last pic of your pet
CSS is becoming a great compilation target
August 14, 2025 at 2:55 PM
CSS is becoming a great compilation target