error: pyyaml-6.0 not supported for interpreter python2.7

       … while evaluating anonymous lambda

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/development/interpreters/python/mk-python-derivation.nix:31:1:

           30|
           31| { name ? "${attrs.pname}-${attrs.version}"
             | ^
           32|

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:72:16:

           71|     let
           72|       result = f origArgs;
             |                ^
           73|

       … while evaluating 'makeOverridable'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:70:24:

           69|   */
           70|   makeOverridable = f: origArgs:
             |                        ^
           71|     let

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/development/interpreters/python/python-packages-base.nix:19:12:

           18|     let
           19|       ff = f origArgs;
             |            ^
           20|       overrideWith = newArgs: origArgs // (if pkgs.lib.isFunction newArgs then newArgs origArgs else newArgs);

       … while evaluating 'makeOverridablePythonPackage'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/development/interpreters/python/python-packages-base.nix:17:37:

           16|   # This function introduces `overridePythonAttrs` and it overrides the call to `buildPythonPackage`.
           17|   makeOverridablePythonPackage = f: origArgs:
             |                                     ^
           18|     let

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/development/python-modules/pyyaml/default.nix:10:1:

            9|
           10| buildPythonPackage rec {
             | ^
           11|   pname = "pyyaml";

       … while evaluating anonymous lambda

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/development/python-modules/pyyaml/default.nix:1:1:

            1| { lib
             | ^
            2| , buildPythonPackage

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:72:16:

           71|     let
           72|       result = f origArgs;
             |                ^
           73|

       … while evaluating 'makeOverridable'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:70:24:

           69|   */
           70|   makeOverridable = f: origArgs:
             |                        ^
           71|     let

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:171:34:

          170|
          171|     in if missingArgs == [] then makeOverridable f allArgs else throw error;
             |                                  ^
          172|

       … while evaluating 'callPackageWith'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:120:35:

          119|   */
          120|   callPackageWith = autoArgs: fn: args:
             |                                   ^
          121|     let

       … from call site

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/top-level/python-packages.nix:9475:12:

         9474|
         9475|   pyyaml = callPackage ../development/python-modules/pyyaml { };
             |            ^
         9476|

       … while evaluating anonymous lambda

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/stdenv/generic/make-derivation.nix:212:13:

          211|       (map (drv: drv.__spliced.buildBuild or drv) (checkDependencyList "depsBuildBuild" depsBuildBuild))
          212|       (map (drv: drv.__spliced.buildHost or drv) (checkDependencyList "nativeBuildInputs" nativeBuildInputs
             |             ^
          213|          ++ lib.optional separateDebugInfo' ../../build-support/setup-hooks/separate-debug-info.sh

       … from call site

       … while evaluating 'getOutput'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/attrsets.nix:825:23:

          824|   */
          825|   getOutput = output: pkg:
             |                       ^
          826|     if ! pkg ? outputSpecified || ! pkg.outputSpecified

       … from call site

       … while evaluating the attribute 'nativeBuildInputs' of the derivation 'python2.7-configargparse-1.5.3'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/stdenv/generic/make-derivation.nix:270:7:

          269|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          270|       name =
             |       ^
          271|         let

       … while evaluating the attribute 'out.outPath'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:207:13:

          206|             drvPath = assert condition; drv.${outputName}.drvPath;
          207|             outPath = assert condition; drv.${outputName}.outPath;
             |             ^
          208|           };

       … while evaluating the attribute 'propagatedBuildInputs' of the derivation 'resholve-0.8.3'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/stdenv/generic/make-derivation.nix:270:7:

          269|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          270|       name =
             |       ^
          271|         let

       … while evaluating the attribute 'out.outPath'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:207:13:

          206|             drvPath = assert condition; drv.${outputName}.drvPath;
          207|             outPath = assert condition; drv.${outputName}.outPath;
             |             ^
          208|           };

       … while evaluating the attribute 'buildInputs' of the derivation 'bats-1.8.2'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/pkgs/stdenv/generic/make-derivation.nix:270:7:

          269|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          270|       name =
             |       ^
          271|         let

       … while evaluating the attribute 'drvPath'

       at /nix/store/8dy3nx5wi65gg4ns0h80pw2v1llghx6h-source/lib/customisation.nix:213:7:

          212|     in commonAttrs // {
          213|       drvPath = assert condition; drv.drvPath;
             |       ^
          214|       outPath = assert condition; drv.outPath;