Use char* instead #21

Job	Run time
Select platforms	1s
linux-x64 / build (debug)	4m 11s
linux-x64 / build (release)	4m 2s
linux-x64-hs-zero / build (debug)	5m 51s
linux-x64-hs-nopch / build (debug)	5m 50s
linux-x64-hs-optimized / build (debug)	5m 49s
linux-x64-hs-minimal / build (debug)	5m 52s
linux-x86 / build (debug)	4m 5s
macos-aarch64 / build (debug)	6m 8s
macos-aarch64 / build (release)	6m 5s
macos-x64 / build (debug)	5m 57s
linux-x86 / build (release)	5m 55s
macos-x64 / build (release)	5m 58s
docs / build (debug)	2m 14s
windows-aarch64 / build (debug)	5m 43s
windows-x64 / build (debug)	5m 44s
windows-aarch64 / build (release)	5m 40s
windows-x64 / build (release)	5m 44s
linux-x64	0s
linux-cross-compile	0s
windows-x64	1s
linux-x86	1s
macos-x64	1s
Remove bundle artifacts	3s
	1h 30m 55s

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