[Git][ghc/ghc][wip/T18835] hadrian: Suppress xelatex output unless it fails

[Ben Gamari]

Ben Gamari pushed to branch wip/T18835 at Glasgow Haskell Compiler / GHC


Commits:
ecba68a9 by Ben Gamari at 2020-10-13T10:11:42-04:00
hadrian: Suppress xelatex output unless it fails

As noted in #18835, xelatex produces an absurd amount of output, nearly
all of which is meaningless. Silence this.

Fixes #18835.

- - - - -


1 changed file:

- hadrian/src/Builder.hs


Changes:

=====================================
hadrian/src/Builder.hs
=====================================
@@ -286,7 +286,18 @@ instance H.Builder Builder where
                 Makeinfo -> do
                   cmd' echo [path] "--no-split" [ "-o", output] [input]
 
-                Xelatex   -> unit $ cmd' [Cwd output] [path] buildArgs
+                Xelatex   ->
+                  -- xelatex produces an incredible amount of output, almost
+                  -- all of which is useless. Suppress it unless user
+                  -- requests a loud build.
+                  if verbosity >= Loud
+                    then cmd' [Cwd output] [path] buildArgs
+                    else do (Stdouterr out, Exit code) <- cmd' [Cwd output] [path] buildArgs
+                            when (code /= ExitSuccess) $
+                              BSL.hPutStrLn stderr out
+                            putFailure "xelatex failed!"
+                            fail "xelatex failed"
+
                 Makeindex -> unit $ cmd' [Cwd output] [path] (buildArgs ++ [input])
 
                 Tar _ -> cmd' buildOptions echo [path] buildArgs



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ecba68a997090529222d9c0ff547305dba648776

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ecba68a997090529222d9c0ff547305dba648776
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