added tldr to all-packages.nix
cleaned up style
added metadata
semicolons
didn't test on mac. removed platform
wrong types
fixed duplication of version
Currently the package is built with /var in $out/var. That fails when it
tries to create/write things at runtime (nix store is read-only).
Instead, tell it to use /var (global directory) and fixup the
installation phase so it doesn't touch /var (leave that for runtime).
This unbreaks the colord dbus service, which apparently is needed by
cups to create color profiles for printers.
Otherwise it will try to guess the log directory, and the guess might
not be the same if chroot builds are enabled or not.
The gruesome details from m4/sudo.m4:
````
dnl
dnl Where the I/O log files go, use /var/log/sudo-io if
dnl /var/log exists, else /{var,usr}/adm/sudo-io
dnl
AC_DEFUN([SUDO_IO_LOGDIR], [
AC_MSG_CHECKING(for I/O log dir location)
if test "${with_iologdir-yes}" != "yes"; then
iolog_dir="$with_iologdir"
elif test -d "/var/log"; then
iolog_dir="/var/log/sudo-io"
elif test -d "/var/adm"; then
iolog_dir="/var/adm/sudo-io"
else
iolog_dir="/usr/adm/sudo-io"
fi
if test "${with_iologdir}" != "no"; then
SUDO_DEFINE_UNQUOTED(_PATH_SUDO_IO_LOGDIR, "$iolog_dir")
fi
AC_MSG_RESULT($iolog_dir)
])dnl
````
Running zpaq on an older but not ancient 64-bit Intel server aborts
with an ‘Illegal instruction’ error. Turns out the build expression
was using -march=native to generate distibution binaries...
Change this to more conservative, portable settings which should
cover ‘all’ CPUs. It may run slightly slower — but that at least
implies running.
As a nice side effect, all common compile flags are now back in
`compileFlags` whence they came, and actually used consistently.
http://hydra.nixos.org/eval/1234895
The mass errors on Hydra seem transient; I verified ghc on i686-linux.
Only darwin jobs are queued ATM. There's a libpng security update
included in this merge, so I don't want to wait too long.
