On Thu, 2023-06-22 at 14:41 -0700, William Stein wrote:
> 
> WebAssembly is not an experimental linux distribution, and it has very
> little overlap with linux distributions.  The WebAssembly ecosystem is
> built from the ground up, primarily on the LLVM (and Rust) toolchain, and
> an ecosystem of free software that is much more liberally licensed (and
> smaller) than what is typically in Linux distributions.    WebAssembly
> is neither better nor worse than Linux distributions; instead it is a
> different thing that solves different problems.

Yes, I know what WebAssembly is. The phrase "pip installability" is a
essentially euphemism for running a binary linux distribution on pypi
using pip as the package manager. On top of the many architecture and
libc-specific binaries that we'll have to build and ship and secure
forever, you're also suggesting that we maintain LLVM/Rust
infrastructure that allows us to ship pre-built WebAssembly targets for
all of those packages as well.

In addition to the usual sage distribution, and now the pypi
distribution, that would mean also maintaining our own LLVM/Rust-based
webassembly distribution. It's recreating exactly what Conda, Nix,
Guix, etc. all do, except with a more experimental toolchain. That's
the main problem: we don't have time to maintain our one existing
distribution, and the installation process is already too complicated
and confusing. With three, it's going to get more complicated, more
confusing, and more bitrotten as we all start to drown under the
increased maintenance burden.

The second issue is that WebAssembly doesn't actually solve the
problems we have, it only pushes them one layer of abstraction up. You
can run an entire OS in WebAssembly in a browser sandbox in docker in a
virtual machine. So what? Now you have two computers to maintain. To
avoid duplicating work, you start to move more and more things into
that browser. Eventually, you're right back where you started; things
conflict, etc. Except now everything doesn't work at half the speed
that it originally didn't work at. There's no way to sweep these
problems under the rug, they're fundamental. And instead of focusing on
them we keep getting distracted by squirrels.

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