[andy_xor_andrew]

ok, I'm hooked - how is setting an env var in the current process unsafe? My gut says it's not unsafe in a memory-ownership sense, but rather in a race condition sense?

whatever the issue is, "setting an env var is unsafe" is so interesting to me that I'm now craving a blog post explaining this

[Orangeair]

It's a long standing bug, setenv and unsetenv are not thread-safe

https://www.evanjones.ca/setenv-is-not-thread-safe.html

[robertlagrant]

I honestly think using setenv is just a terrible idea.

[ak_111]

can you elaborate what is the simpelist alternative?

[darthwalsh]

Simple, you don't set any env vars after starting new threads

[estebank]

https://doc.rust-lang.org/std/env/fn.set_var.html#safety