*** setup configure

Configuring HsHyperEstraier-0.2.1...
Dependency base -any: using base-4.2.0.0
Dependency bytestring -any: using bytestring-0.9.1.6
Dependency network -any: using network-2.2.1.7
Dependency utf8-string -any: using utf8-string-0.3.6
cabal-setup: The pkg-config package hyperestraier version >=1.4.9 is required
but it could not be found.

*** Trying again with preferred-versions

*** setup configure

Configuring HsHyperEstraier-0.2.1...
Dependency base <4: using base-3.0.3.2
Dependency bytestring -any: using bytestring-0.9.1.6
Dependency network -any: using network-2.2.1.7
Dependency utf8-string -any: using utf8-string-0.3.6
Warning: This package indirectly depends on multiple versions of the same
package. This is highly likely to cause a compile failure.
package base-3.0.3.2 requires syb-0.1.0.2
package parsec-3.1.0 requires syb-0.1.0.3
cabal-setup: The pkg-config package hyperestraier version >=1.4.9 is required
but it could not be found.