When something like this fails, I usually do:

make maintainer-clean
git submodule update --init
./boot
./configure
make -j


On 31/07/2018 16:34, Ara Adkins wrote:
Hey Devs,

I'm having trouble building the head of the ghc-8.6 branch (`26a7f850d1`) on my Arch Linux machine. The essence of the error is this as follows, though the full result of make (to the point of error) is attached.

```
Configuring template-haskell-2.14.0.0...
ghc-cabal: Encountered missing dependencies:
ghc-boot-th ==8.6.* && ==8.7
```

The output of configure is as follows:
```
----------------------------------------------------------------------
Configure completed successfully.

   Building GHC version  : 8.7.20180730
          Git commit id  : 26a7f850d15b91ad68d1e28d467faba00bb79144

   Build platform        : x86_64-unknown-linux
   Host platform         : x86_64-unknown-linux
   Target platform       : x86_64-unknown-linux

   Bootstrapping using   : /usr/bin/ghc
      which is version   : 8.4.3

   Using (for bootstrapping) : gcc
   Using gcc                 : gcc
      which is version       : 8.1.1
   Building a cross compiler : NO
   Unregisterised            : NO
   hs-cpp       : gcc
   hs-cpp-flags : -E -undef -traditional
   ar           : ar
   ld           : ld.gold
   nm           : nm
   libtool      : libtool
   objdump      : objdump
   ranlib       : ranlib
   windres      :
   dllwrap      :
   genlib       :
   Happy        : /home/ara/.local/bin/happy (1.19.9)
   Alex         : /usr/bin/alex (3.2.4)
   Perl         : /usr/bin/perl
   sphinx-build : /usr/bin/sphinx-build
   xelatex      : /usr/bin/xelatex

   Using LLVM tools
      clang : clang
      llc   :
      opt   :
   HsColour : /usr/bin/HsColour

   Tools to build Sphinx HTML documentation available: YES
   Tools to build Sphinx PDF documentation available: YES
----------------------------------------------------------------------
```

Any help would be most appreciated.

Best,
_ara


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