How to use custom conditions + setup files

[lishaduck]

Is there a way to get resolve.conditions to apply to Vitest's setupFiles? I'm trying to set setupFiles: ["@flint.fyi/core/ts-patch/install-patch-hooks"], where @flint.fyi/core's package.json exports looks like this:

"exports": {
	".": {
		"@flint.fyi/source": {
			"types": "./.tsbuildinfo/types/src/index.d.ts",
			"default": "./src/index.ts"
		},
		"default": "./lib/index.js"
	},
	"./ts-patch/install-patch-hooks": {
		"@flint.fyi/source": {
			"types": "./.tsbuildinfo/types/src/ts-patch/install-patch-hooks.d.ts",
			"default": "./src/ts-patch/install-patch-hooks.ts"
		},
		"default": "./lib/ts-patch/install-patch-hooks.js"
	}
},

We output tsc -b to ./.tsbuildinfo/types/ before running tests for type tests, but we'd like to avoid running a full tsdown build as well, which it seems we need.
Ideally we wouldn't need to additionally pass [email protected]/source via NODE_OPTIONS, although we do use pnpm, so using shellEmulator is possible, if not our preference.

TBH, this is probably a feature request in disguise, but perhaps I'm just missing something. Thank you!