<div dir="ltr">Hi Brandon,<div><br></div><div>I definitely have only one instance installed:</div><div><br></div><div><div><font face="courier new, monospace">root@26fc365ee4e6:/# ghc-pkg list | grep hash</font></div><div>
<font face="courier new, monospace"> cryptohash-0.11.2</font></div><div><font face="courier new, monospace"> cryptohash-cryptoapi-0.1.0</font></div><div><font face="courier new, monospace"> hashable-1.2.1.0</font></div>
<div><font face="courier new, monospace"> hashed-storage-0.5.10</font></div><div><font face="courier new, monospace"> hashtables-1.0.1.8</font></div><div><font face="courier new, monospace"> murmur-hash-0.1.0.6</font></div>
<div><font face="courier new, monospace"> static-hash-0.0.1</font></div></div><div><br></div><div>The ubuntu system was built using this <font face="courier new, monospace">Dockerfile</font> from using only standard <font face="courier new, monospace">apt-get</font> commands:</div>
<div><br></div><div><div><font face="courier new, monospace">FROM ubuntu:14.04</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">RUN apt-get update</font></div>
<div><font face="courier new, monospace">RUN apt-get upgrade -y</font></div><div><font face="courier new, monospace">RUN apt-get install -y fakeroot curl dnsutils git golang jq openssh-client openssh-server redis-server telnet unzip vim wget</font></div>
<div><font face="courier new, monospace">RUN apt-get install -y ghc</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-hdbc-dev</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-hdbc-postgresql-dev</font></div>
<div><font face="courier new, monospace">RUN apt-get install -y libghc-hdbc-sqlite3-dev</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-zeromq3-haskell-dev</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-lens-dev</font></div>
<div><font face="courier new, monospace">RUN apt-get install -y libghc-aeson-dev libghc-aeson-pretty-dev libghc-lens-aeson-dev</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-hashable-dev</font></div>
<div><font face="courier new, monospace">RUN apt-get install -y cabal-debian</font></div><div><font face="courier new, monospace">RUN apt-get install -y libghc-cryptohash-cryptoapi-dev libghc-cryptohash-dev libghc-digest-dev libghc-hashable-dev libghc-hashed-storage-dev libghc-hashtables-dev libghc-intern-dev libghc-murmur-hash-dev libghc-puremd5-dev libghc-skein-dev libghc-static-hash-dev libghc-unordered-containers-dev</font></div>
<div><font face="courier new, monospace">RUN apt-get clean</font></div></div><div><br></div><div><br></div><div>Cheers,</div><div><br></div><div>-John</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 12 May 2014 11:03, Brandon Allbery <span dir="ltr"><<a href="mailto:allbery.b@gmail.com" target="_blank">allbery.b@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div><div class="h5">On Sun, May 11, 2014 at 8:58 PM, John Ky <span dir="ltr"><<a href="mailto:john@gocatch.com" target="_blank">john@gocatch.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>I have some code that compiles when running on GHC on OS X, but not on Ubuntu:<br></div><div><br></div><div><font face="courier new, monospace"> No instance for (hashable-1.2.1.0:Data.Hashable.Class.GHashable</font></div>
<div><font face="courier new, monospace"> (GHC.Generics.Rep Point))</font></div><div><font face="courier new, monospace"> arising from a use of `hashable-1.2.1.0:Data.Hashable.Class.$gdmhashWithSalt'</font></div>
<div><font face="courier new, monospace"> Possible fix:</font></div><div><font face="courier new, monospace"> add an instance declaration for</font></div><div><font face="courier new, monospace"> (hashable-1.2.1.0:Data.Hashable.Class.GHashable</font></div>
<div><font face="courier new, monospace"> (GHC.Generics.Rep Point))</font></div><div><font face="courier new, monospace"> In the expression:</font></div><div><font face="courier new, monospace"> (hashable-1.2.1.0:Data.Hashable.Class.$gdmhashWithSalt)</font></div>
<div><font face="courier new, monospace"> In an equation for `hashWithSalt':</font></div><div><font face="courier new, monospace"> hashWithSalt</font></div><div><font face="courier new, monospace"> = (hashable-1.2.1.0:Data.Hashable.Class.$gdmhashWithSalt)</font></div>
<div><font face="courier new, monospace"> In the instance declaration for `Hashable Point'</font></div></div></blockquote><div><br></div></div></div><div>The fully qualified (with package name/version) typeclass makes me think you have multiple versions of the hashable package installed, and the one your source is using is different from one pulled in by something else.</div>
<div><br></div><div>ghc makes it dangerous to have multiple versions of a package installed. Use `ghc-pkg list` to make sure you have only one; if there is one in the global section and another in the local section, remove the local one and reinstall anything broken by that with `cabal install $thepackage --constraint='hashable installed'`.</div>
<span class="HOEnZb"><font color="#888888">
<div><br></div></font></span></div><span class="HOEnZb"><font color="#888888">-- <br><div dir="ltr"><div>brandon s allbery kf8nh sine nomine associates</div><div><a href="mailto:allbery.b@gmail.com" target="_blank">allbery.b@gmail.com</a> <a href="mailto:ballbery@sinenomine.net" target="_blank">ballbery@sinenomine.net</a></div>
<div>unix, openafs, kerberos, infrastructure, xmonad <a href="http://sinenomine.net" target="_blank">http://sinenomine.net</a></div></div>
</font></span></div></div>
</blockquote></div><br></div>
<br>
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