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    Good suggestion, but unfortunately it is one that I replaced which
    is already version 2.20.0<br>
    <br>
    <div class="moz-cite-prefix">Op 23-8-2018 om 10:35 schreef Yuji
      Yamamoto:<br>
    </div>
    <blockquote type="cite"
cite="mid:CA+6J5GGLMRNVpOaSUjgp38pff=dG0aNdTJa4JOwQQk_HSVD9bg@mail.gmail.com">
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      <div dir="ltr">Try  `stack exec which haddock` to see in which
        directory your haddock is installed.</div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">2018年8月23日(木) 17:32 Jeroen Bransen <<a
            href="mailto:jeroen@chordify.net" moz-do-not-send="true">jeroen@chordify.net</a>>:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div text="#000000" bgcolor="#FFFFFF"> Hi cafe,<br>
            <br>
            Is there anyone on this list that can explain how to replace
            the haddock executable to solve the problem below? I
            replaced some haddock binary (which I build adding
            haddock-api-2.20.0 to my global stack config and doing stack
            install haddock), and I now have:<br>
            <br>
            $ ~/.stack/programs/x86_64-linux/ghc-8.4.3/bin/haddock
            --version<br>
            Haddock version 2.20.0, (c) Simon Marlow 2006<br>
            Ported to use the GHC API by David Waern 2006-2008<br>
            <br>
            This seems to be the latest Haddock release (and I am using
            Stack 1.7.1 which is also the latest), but my `stack
            haddock` build still results the same error as below
            (ExitFailure (-11)).<br>
            <br>
            Jeroen Bransen<br>
            <br>
            <div class="m_847421039141309303moz-cite-prefix">Op
              26-7-2018 om 16:53 schreef Saurabh Nanda:<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">Hi,
                <div><br>
                </div>
                <div>How does confirm that this bug is being hit. `stack
                  haddock haskell-src-exts` on LTS-12.1 fails with the
                  following cryptic error:</div>
                <div><br>
                </div>
                <div>    --  While building custom Setup.hs for package
                  haskell-src-exts-1.20.2 using:</div>
                <div>     
/home/vl/.stack/setup-exe-cache/x86_64-linux/Cabal-simple_mPHDZzAJ_2.2.0.1_ghc-8.4.3
                  --builddir=.stack-work/dist/x86_64-linux/Cabal-2.2.0.1
                  haddock --html --hoogle
                  --html-location=../$pkg-$version/
                  --haddock-option=--hyperlinked-source</div>
                <div>    Process exited with code: ExitFailure (-11)</div>
                <div>    Logs have been written to:
/home/vl/vacationlabs/haskell/.stack-work/logs/haskell-src-exts-1.20.2.log</div>
                <div><br>
                </div>
                <div>The log file doesn't contain an error.</div>
                <div><br>
                </div>
                <div>How does one upgrade the haddock version and get
                  stack to use it?</div>
                <div><br>
                </div>
                <div>-- Saurabh.</div>
                <div><br>
                </div>
              </div>
              <br>
              <div class="gmail_quote">
                <div dir="ltr">On Mon, Jul 23, 2018 at 11:58 AM Sven
                  Panne <<a href="mailto:svenpanne@gmail.com"
                    target="_blank" moz-do-not-send="true">svenpanne@gmail.com</a>>
                  wrote:<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div dir="ltr">
                    <div class="gmail_quote">
                      <div dir="ltr">Am Mo., 23. Juli 2018 um 05:49 Uhr
                        schrieb Yuji Yamamoto <<a
                          href="mailto:whosekiteneverfly@gmail.com"
                          target="_blank" moz-do-not-send="true">whosekiteneverfly@gmail.com</a>>:<br>
                      </div>
                      <blockquote class="gmail_quote" style="margin:0 0
                        0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex">
                        <div dir="ltr">Thank you very much! <br>
                          <div><br>
                          </div>
                          <div>I confirmed the replaced haddock
                            executable can successfully generate the
                            docs!</div>
                        </div>
                      </blockquote>
                      <div><br>
                      </div>
                      <div>Yesterday I had quite some trouble because of
                        the Haddock problem, too, and I guess I'm not
                        alone: haskell-src-exts has 165 direct reverse
                        dependencies, so probably hundreds of Hackage
                        packages are affected by this. The workaround is
                        simple (don't use --haddock with stack), but far
                        from satisfying and not very obvious.</div>
                      <div><br>
                      </div>
                      <div>Given the fact that this affects a very
                        central piece of the Haskell infrastructure in
                        its latest stable incarnation (GHC 8.4.3): Can
                        we have an 8.4.4 with a fixed Haddock?</div>
                    </div>
                  </div>
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              <div><br>
              </div>
              -- <br>
              <div dir="ltr" class="m_847421039141309303gmail_signature"
                data-smartmail="gmail_signature"><a
                  href="http://www.saurabhnanda.com" target="_blank"
                  moz-do-not-send="true">http://www.saurabhnanda.com</a></div>
              <br>
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      -- <br>
      <div dir="ltr" class="gmail_signature"
        data-smartmail="gmail_signature">
        <div dir="ltr">
          <div>山本悠滋<br>
            twitter: @igrep<br>
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