libgda, libgda6: fix the eval

Without the change the eval fails as:

    $ nix build --no-link -f. libgda
    error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'libgda-5.2.10'
         whose name attribute is located at kgs/stdenv/generic/make-derivation.nix:336:7

       … while evaluating attribute 'NIX_CFLAGS_COMPILE' of derivation 'libgda-5.2.10'

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: The `env` attribute set can only contain derivation, string, boolean or integer attributes. The `NIX_CFLAGS_COMPILE` attribute is of type list.

0 files changed, 0 insertions, 0 deletions