jb-kotlin-lsp-bin: set meta.mainProgram main

nix-run: update to fix running with links

nexthack: fix colours on macOS

nexthack: init at 3.7-git

nix-run: update to fix running without arguments

nix-run: update

nix-run: replace with haskell implementation at 0.1.0.0

nix-run: init at 1.0.0-git

Switch to npins for nixpkgs pinning and add jb-kotlin-lsp-bin