… while calling anonymous lambda
       at /nix/store/vgx3678yb41cb8g2g66nlj1alf3ksh92-source/pkgs/stdenv/generic/make-derivation.nix:192:81:
          191|   checkDependencyList = checkDependencyList' [];
          192|   checkDependencyList' = positions: name: deps: lib.flip lib.imap1 deps (index: dep:
             |                                                                                 ^
          193|     if lib.isDerivation dep || isNull dep || builtins.typeOf dep == "string" || builtins.typeOf dep == "path" then dep
       … while evaluating call site
       at /nix/store/vgx3678yb41cb8g2g66nlj1alf3ksh92-source/pkgs/stdenv/generic/make-derivation.nix:193:8:
          192|   checkDependencyList' = positions: name: deps: lib.flip lib.imap1 deps (index: dep:
          193|     if lib.isDerivation dep || isNull dep || builtins.typeOf dep == "string" || builtins.typeOf dep == "path" then dep
             |        ^
          194|     else if lib.isList dep then checkDependencyList' ([index] ++ positions) name dep
       … while calling 'isDerivation'
       at /nix/store/vgx3678yb41cb8g2g66nlj1alf3ksh92-source/lib/attrsets.nix:427:18:
          426|   */
          427|   isDerivation = x: x.type or null == "derivation";
             |                  ^
          428|
       error: undefined variable 'go_1_20'
       at /nix/store/xm53r3d6cc8vn9vw1pmcm331xpv72aqa-source/flake.nix:27:13:
           26|             go-migrate
           27|             go_1_20
             |             ^
           28|             golangci-lint