[arch-haskell] Mysterious build errors

[Peter Simons]

Hi,

I've seen the following strange build errors a few times now, but I am
at a loss how to explain it. Can someone help me? I run a clean build
using Remy's toolchain as follows:

  scripts/setup-chroots && manycabal2arch PKGLIST ~/.cabal/packages/hackage.haskell.org/00-index.tar habs && sudo ./makeworld

The build fine for the most part, until ...

 | ==> Making package: haskell-haxml 1.20.2-1 (Sun Oct 24 12:24:41 UTC 2010)
 | ==> Checking Runtime Dependencies...
 | ==> Installing missing dependencies...
 | resolving dependencies...
 | looking for inter-conflicts...
 |
 | Targets (1): haskell-polyparse-1.4-1
 |
 | Total Download Size:    0.00 MB
 | Total Installed Size:   2.34 MB
 |
 | Proceed with installation? [Y/n]
 | checking package integrity...
 | :: File haskell-polyparse-1.4-1-i686.pkg.tar.xz is corrupted. Do you want to delete it? [Y/n]
 | error: failed to commit transaction (invalid or corrupted package)
 | haskell-polyparse-1.4-1-i686.pkg.tar.xz is invalid or corrupted
 | Errors occurred, no packages were upgraded.
 | ==> ERROR: 'pacman' failed to install missing dependencies.
 | Build failed, check /home/simons/src/archhaskell-build/chroot-i686/copy/build
 | Begin building haskell-non-negative...
 | :: Synchronizing package databases...
 |  core is up to date
 |  extra is up to date
 |  community is up to date
 |  repo is up to date
 | :: Starting full system upgrade...
 |  there is nothing to do

The thing is, though, that haskell-polyparse *is* available. It was
build before haskell-haxml, and the build log shows no errors:

 | Begin building haskell-polyparse...
 | :: Synchronizing package databases...
 |  core is up to date
 |  extra is up to date
 |  community is up to date
 |  repo                      1.4K    4.7M/s 00:00:00
 | :: Starting full system upgrade...
 |  there is nothing to do
 | ==> Making package: haskell-polyparse 1.4-1 (Sun Oct 24 12:15:30 UTC 2010)
 | ==> Checking Runtime Dependencies...
 | ==> Checking Buildtime Dependencies...
 | ==> Retrieving Sources...
 |   -> Found polyparse-1.4.tar.gz
 | ==> Validating source files with md5sums...
 |     polyparse-1.4.tar.gz ... Passed
 | ==> Extracting Sources...
 |   -> Extracting polyparse-1.4.tar.gz with bsdtar
 | ==> Starting build()...
 | Configuring polyparse-1.4...
 | Preprocessing library polyparse-1.4...
 | Building polyparse-1.4...
 | [ 1 of 11] Compiling Text.ParserCombinators.HuttonMeijerWallace ( src/Text/ParserCombinators/HuttonMeijerWallace.hs, dist/build/Text/ParserCombinators/HuttonMeijerWallace.o )
 | [ 2 of 11] Compiling Text.ParserCombinators.HuttonMeijer ( src/Text/ParserCombinators/HuttonMeijer.hs, dist/build/Text/ParserCombinators/HuttonMeijer.o )
 | [ 3 of 11] Compiling Text.ParserCombinators.Poly.Base ( src/Text/ParserCombinators/Poly/Base.hs, dist/build/Text/ParserCombinators/Poly/Base.o )
 | [ 4 of 11] Compiling Text.ParserCombinators.Poly.Plain ( src/Text/ParserCombinators/Poly/Plain.hs, dist/build/Text/ParserCombinators/Poly/Plain.o )
 | [ 5 of 11] Compiling Text.ParserCombinators.Poly.Lazy ( src/Text/ParserCombinators/Poly/Lazy.hs, dist/build/Text/ParserCombinators/Poly/Lazy.o )
 | [ 6 of 11] Compiling Text.ParserCombinators.Poly.State ( src/Text/ParserCombinators/Poly/State.hs, dist/build/Text/ParserCombinators/Poly/State.o )
 | [ 7 of 11] Compiling Text.ParserCombinators.Poly.StateLazy ( src/Text/ParserCombinators/Poly/StateLazy.hs, dist/build/Text/ParserCombinators/Poly/StateLazy.o )
 | [ 8 of 11] Compiling Text.ParserCombinators.Poly ( src/Text/ParserCombinators/Poly.hs, dist/build/Text/ParserCombinators/Poly.o )
 | [ 9 of 11] Compiling Text.Parse       ( src/Text/Parse.hs, dist/build/Text/Parse.o )
 | [10 of 11] Compiling Text.ParserCombinators.Poly.ByteString ( src/Text/ParserCombinators/Poly/ByteString.hs, dist/build/Text/ParserCombinators/Poly/ByteString.o )
 | [11 of 11] Compiling Text.Parse.ByteString ( src/Text/Parse/ByteString.hs, dist/build/Text/Parse/ByteString.o )
 | Registering polyparse-1.4...
 | Running Haddock for polyparse-1.4...
 | Preprocessing library polyparse-1.4...
 | Warning: The documentation for the following packages are not installed. No
 | links will be generated to these packages: ffi-1.0, rts-1.0
 | Warning: Text.ParserCombinators.HuttonMeijerWallace: could not find link destinations for:
 |     Text.ParserCombinators.HuttonMeijerWallace.ParseResult
 | Warning: Text.ParserCombinators.HuttonMeijer: could not find link destinations for:
 |     Text.ParserCombinators.HuttonMeijer.Token
 | Documentation created: dist/doc/html/polyparse/index.html
 | Creating package registration script: register.sh
 | Unregistering polyparse-1.4...
 | ==> Entering fakeroot environment...
 | ==> Starting package()...
 | Installing library in /build/pkg/usr/lib/polyparse-1.4/ghc-6.12.3
 | ==> Tidying install...
 |   -> Purging other files...
 |   -> Compressing man and info pages...
 |   -> Stripping unneeded symbols from binaries and libraries...
 | ==> Creating package...
 |   -> Generating .PKGINFO file...
 |   -> Adding install script...
 |   -> Compressing package...
 | ==> Leaving fakeroot environment.
 | ==> Finished making: haskell-polyparse 1.4-1 (Sun Oct 24 12:17:33 UTC 2010)
 | ==> Extracting database to a temporary location...
 | ==> Adding package 'haskell-polyparse-1.4-1-i686.pkg.tar.xz'
 |   -> Creating 'desc' db entry...
 |   -> Computing md5 checksums...
 |   -> Creating 'depends' db entry...
 | ==> Creating updated database file 'repo.db.tar.gz'
 | Begin building haskell-safe...
 | :: Synchronizing package databases...
 |  core is up to date
 |  extra is up to date
 |  community is up to date
 |  repo                      1.6K    4.7M/s 00:00:00
 | :: Starting full system upgrade...
 |  there is nothing to do

Now, the error is gone when I run "makeworld" *again*. It appears that
this problem occurs every time I perform a clean build from scratch. An
incremental build, i.e. one that's run with a previously existing
sandbox, however, seems to work.

Does anyone know to explain that? Could there be a race condition
somewhere?

Take care,
Peter