Revert changes to buildPackages for nix-tools#134

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eamsden wants to merge 2 commits intoinput-output-hk:masterfrom

eamsden:eamsden/fix_callStackToNix_when_cross_compiling

Commits on May 18, 2019

Revert changes to buildPackages for nix-tools which broke callStackToNix when
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Merge branch 'master' into eamsden/fix_callStackToNix_when_cross_compiling
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