Bug#899208: pandoc: FTBFS on armel/armhf: Identifier `InvalidYaml' used as a constructor-like thing

[Emilio Pozuelo Monfort]

Source: pandoc
Version: 2.2-1
Severity: serious

pandoc fails to build on armel and armhf:

[117 of 131] Compiling Text.Pandoc.Readers.Markdown ( src/Text/Pandoc/Readers/Markdown.hs, dist-ghc/build/Text/Pandoc/Readers/Markdown.o )

src/Text/Pandoc/Readers/Markdown.hs:275:20: error:
    * Identifier `InvalidYaml' used as a constructor-like thing
    * In the pattern:
        InvalidYaml (Just YamlParseException {yamlProblem = problem,
                                              yamlContext = _ctxt,
                                              yamlProblemMark = YamlMark {yamlLine = yline,
                                                                          yamlColumn = ycol}})
      In a case alternative:
          InvalidYaml (Just YamlParseException {yamlProblem = problem,
                                                yamlContext = _ctxt,
                                                yamlProblemMark = YamlMark {yamlLine = yline,
                                                                            yamlColumn = ycol}})
            -> logMessage
                 $ CouldNotParseYamlMetadata
                     problem
                     (setSourceLine
                        (setSourceColumn pos (sourceColumn pos + ycol))
                        (sourceLine pos + 1 + yline))
      In a stmt of a 'do' block:
        case err' of
          InvalidYaml (Just YamlParseException {yamlProblem = problem,
                                                yamlContext = _ctxt,
                                                yamlProblemMark = YamlMark {yamlLine = yline,
                                                                            yamlColumn = ycol}})
            -> logMessage
                 $ CouldNotParseYamlMetadata
                     problem
                     (setSourceLine
                        (setSourceColumn pos (sourceColumn pos + ycol))
                        (sourceLine pos + 1 + yline))
          _ -> logMessage $ CouldNotParseYamlMetadata (show err') pos
    |
275 |                    InvalidYaml (Just YamlParseException{
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...


Full logs at https://buildd.debian.org/status/package.php?p=pandoc&suite=sid

Emilio

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (800, 'unstable'), (700, 'experimental'), (650, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armhf

Kernel: Linux 4.16.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled