Resolving dependencies...
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Starting     nettle-0.3.0
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Starting     asn1-parse-0.9.5
Failed to install nettle-0.3.0
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/nettle-0.3.0-Eq0QPWljqFO3YxBn5C97vM.log ):
cabal: Entering directory '/tmp/cabal-tmp-25054/nettle-0.3.0'
Configuring nettle-0.3.0...
cabal: Missing dependency on a foreign library:
* Missing (or bad) C library: nettle
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.If the
library file does exist, it may contain errors that are caught by the C
compiler at the preprocessing stage. In this case you can re-run configure
with the verbosity flag -v3 to see the error messages.

cabal: Leaving directory '/tmp/cabal-tmp-25054/nettle-0.3.0'
Starting     semigroupoids-5.3.5
Building     asn1-parse-0.9.5
Building     semigroupoids-5.3.5
Completed    asn1-parse-0.9.5
Completed    cryptonite-0.27
Completed    semigroupoids-5.3.5
Completed    graphviz-2999.20.1.0
cabal: Error: some packages failed to install:
hOpenPGP-2.9.5-A71UjEqkYmbDKj4BkrS2QR depends on hOpenPGP-2.9.5 which failed
to install.
hopenpgp-tools-0.23.6-LJxh6g2MgOI9N1hqH0sJit depends on hopenpgp-tools-0.23.6
which failed to install.
nettle-0.3.0-Eq0QPWljqFO3YxBn5C97vM failed during the configure step. The
exception was:
ExitFailure 1