$ makepkg -src
==> WARNING: Cannot find the git binary required to determine latest git revision.
==> Making package: expac-git 20111204-1 (Sun Dec  4 13:08:44 EST 2011)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for inter-conflicts...

Targets (2): perl-error-0.17016-2  git-1.7.8-1

Total Installed Size:   13.80 MiB

Proceed with installation? [Y/n] 
(2/2) checking package integrity                                    [#####################################] 100%
(2/2) loading package files                                         [#####################################] 100%
(2/2) checking for file conflicts                                   [#####################################] 100%
(2/2) checking available disk space                                 [#####################################] 100%
(1/2) installing perl-error                                         [#####################################] 100%
(2/2) installing git                                                [#####################################] 100%
Optional dependencies for git
    tk: gitk and git gui
    perl-libwww: git svn
    perl-term-readkey: git svn
    perl-mime-tools: git send-email
    perl-net-smtp-ssl: git send-email TLS support
    perl-authen-sasl: git send-email TLS support
    python2: various helper scripts
    subversion: git svn
    cvsps: git cvsimport
==> Retrieving Sources...
==> Extracting Sources...
==> Starting build()...
==> Connecting to GIT server....
Cloning into 'expac'...
remote: Counting objects: 215, done.
remote: Compressing objects: 100% (202/202), done.
remote: Total 215 (delta 130), reused 45 (delta 13)
Receiving objects: 100% (215/215), 30.91 KiB, done.
Resolving deltas: 100% (130/130), done.
==> GIT checkout done or server timeout
==> Starting make...
cc -c -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -std=c99 -g -pedantic -Wall -Wextra -Werror -DVERSION=\"0.07-4-g261c9a9\" expac.c
pod2man --section=1 --center="expac manual" --name="EXPAC" --release="expac 0.07-4-g261c9a9" README.pod > expac.1
cc -o expac expac.o -Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu -lalpm
==> Entering fakeroot environment...
==> Determining latest git revision...
  -> Version found: 20111204
==> Starting package()...
install -D -m755 expac /home/facade/expac-git/pkg/usr/bin/expac
install -D -m644 expac.1 /home/facade/expac-git/pkg/usr/share/man/man1/expac.1
==> Tidying install...
  -> Purging unwanted files...
  -> Compressing man and info pages...
  -> Stripping unneeded symbols from binaries and libraries...
==> Creating package...
  -> Generating .PKGINFO file...
  -> Compressing package...
==> Leaving fakeroot environment.
==> Finished making: expac-git 20111204-1 (Sun Dec  4 13:08:47 EST 2011)
==> Cleaning up...
comm: file 1 is not in sorted order
comm: file 2 is not in sorted order
comm: file 1 is not in sorted order
comm: file 2 is not in sorted order
==> ERROR: An unknown error has occurred. Exiting...
==> Removing installed dependencies...
checking dependencies...

Targets (2): git-1.7.8-1  perl-error-0.17016-2

Total Removed Size:     13.80 MiB

Do you want to remove these packages? [Y/n] 
(1/2) removing git                                                  [#####################################] 100%
(2/2) removing perl-error                                           [#####################################] 100%