error: … while evaluating the attribute 'outPath' at :19:9: 18| value = commonAttrs // { 19| outPath = builtins.getAttr outputName strict; | ^ 20| drvPath = strict.drvPath; … while calling the 'getAttr' builtin at :19:19: 18| value = commonAttrs // { 19| outPath = builtins.getAttr outputName strict; | ^ 20| drvPath = strict.drvPath; … while calling the 'derivationStrict' builtin at :9:12: 8| 9| strict = derivationStrict drvAttrs; | ^ 10| … while evaluating derivation '~jiggle~' whose name attribute is located at /pwd/lang/eval-fail-derivation-name.nix:2:3 error: invalid derivation name: name '~jiggle~' contains illegal character '~'. Please pass a different 'name'.