this derivation will be built: /nix/store/mfvmnd8mri6318vcym3qjrnsix2dgqv9-check-copilot-language-server.drv building '/nix/store/mfvmnd8mri6318vcym3qjrnsix2dgqv9-check-copilot-language-server.drv' upload niks3: ok