Initial build failure is onserved on `staging` branch:
```
$ nix-build -A transfig
...
make[1]: Entering directory '/build/transfig.3.2.4'
Imakefile.c:20:2: Include file Imake.tmpl not found
imake: Exit code 1.
Stop.
```
This happened after 8675ca0 ("xorg.xorgcffiles: 1.0.6 -> 1.0.7")
bump which exposed an old bug in `imake.patch`. `imake.patch`
dropped by accident definiton of `LinuxRedHat` enum and changed
evaluation of the following code:
```
#if LinuxDistribution == LinuxRedHat
...
# define ProjectRoot /usr
#endif
```
References to `/usr` were addded in d47131ed97.
Before this change `LinuxDistribution == LinuxRedHat` evaluated to true.
After this change `LinuxDistribution == LinuxRedHat` evaluates to false.
Mechanically I moved `#if 0` right after enum definitions but still
before system autodetection.
Now `transfig` builds successfully.
Closes: https://github.com/NixOS/nixpkgs/issues/135337
Signed-off-by: Sergei Trofimovich <slyich@gmail.com>
exists in one of a fixed set of paths (e.g., /usr/bin/cc). For
instance, on a system without /usr/bin/cc the variable DependCmd
would evaluate to "makedepend", and on a system with it, to
"gccmakedep".
Solution: just use "gcc" always. Also disabled some shitty code to
detect the current Linux distribution (by probing for files like
/etc/SuSE-release).
svn path=/nixpkgs/trunk/; revision=4534
