In reply to @test-user:c.imperishable.name
why doesn't string interpolation work with integers?

In reply to @test-user:c.imperishable.name
basically have the "string-${variable}"syntax automatically calltoString if necessary

In reply to @mattsturg:matrix.org
There's some precedent for this already: paths and derivations are stringified when used with string interpolation.
AFAIK most languages that have string formatting and/or string interpolation automatically stringify non-string values?
I get why you may want concatenation to be explicit about the type, but interpolation feels different 🤔

Hi folks, let's say I am building a derivation that depends on many pkgs and I wanna be able to build the final derivation with various versions of the dependencies. What is a clean way to do it? I was thinking something like:

builder = { pkg1 ? { version = null; hash = null;} pkg2 ? { version = null; hash = null; ... }: {
  ...
}