Meson

libnixt/Serialize: use unified position #1764

Job	Run time
nix-build-develop-clang (none, release, true)	2m 55s
nix-build-develop-gcc (none, release, true)	3m 11s
nix-build-develop-clang (none, release, false)	3m 5s
nix-build-develop-gcc (none, release, false)	3m 14s
nix-build-develop-clang (none, debug, true)	2m 35s
nix-build-develop-gcc (none, debug, true)	3m 5s
nix-build-develop-clang (none, debug, false)	2m 34s
nix-build-develop-gcc (none, debug, false)	3m 0s
nix-build-develop-gcc (undefined, release, true)	6m 40s
nix-build-develop-gcc (undefined, release, false)	6m 45s
nix-build-develop-gcc (undefined, debug, true)	3m 35s
nix-build-develop-gcc (undefined, debug, false)	3m 41s
	44m 20s

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