Meson

nixd/Controller: support "goto definition" for select expressions #3080

Job	Run time
nix-build-develop-clang (none, release, true)	2m 53s
nix-build-develop-gcc (none, release, true)	3m 6s
nix-build-develop-clang (none, release, false)	6m 7s
nix-build-develop-gcc (none, release, false)	3m 5s
nix-build-develop-clang (none, debug, true)	2m 46s
nix-build-develop-gcc (none, debug, true)	2m 54s
nix-build-develop-clang (none, debug, false)	2m 43s
nix-build-develop-gcc (none, debug, false)	3m 2s
nix-build-develop-gcc (address, release, true)	4m 39s
nix-build-develop-gcc (address, release, false)	4m 32s
nix-build-develop-gcc (address, debug, true)	3m 49s
nix-build-develop-gcc (address, debug, false)	4m 0s
nix-build-develop-gcc (undefined, release, true)	4m 7s
nix-build-develop-gcc (undefined, release, false)	4m 9s
nix-build-develop-gcc (undefined, debug, true)	3m 26s
nix-build-develop-gcc (undefined, debug, false)	3m 18s
	58m 36s

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