skalibs: new package

Skalibs is a set of general-purpose C programming libraries used for
building all software at skarnet.org.

pkgs/development/libraries/skalibs/default.nix

@@ -0,0 +1,58 @@
+{stdenv, fetchurl}:
+
+let
+
+  version = "1.6.0.0";
+
+in stdenv.mkDerivation rec {
+  name = "skalibs-${version}";
+
+  src = fetchurl {
+    url = "http://skarnet.org/software/skalibs/${name}.tar.gz";
+    sha256 = "0jz3farll9n5jvz3g6wri99s6njkgmnf0r9jqjlg03f20dzv8c8w";
+  };
+
+  sourceRoot = "prog/${name}";
+
+  # See http://skarnet.org/cgi-bin/archive.cgi?1:mss:75:201405:pkmodhckjklemogbplje
+  patches = [ ./getpeereid.patch ];
+
+  configurePhase = ''
+    pushd conf-compile
+
+    printf "$out/bin"     > conf-defaultpath
+    printf "$out/etc"     > conf-etc
+    printf "$out/bin"     > conf-install-command
+    printf "$out/include" > conf-install-include
+    printf "$out/libexec" > conf-install-libexec
+    printf "$out/lib"     > conf-install-library
+    printf "$out/lib"     > conf-install-library.so
+    printf "$out/sysdeps" > conf-install-sysdeps
+
+    # let nix builder strip things, cross-platform
+    truncate --size 0 conf-stripbins
+    truncate --size 0 conf-striplibs
+
+    rm -f flag-slashpackage
+    touch flag-allstatic
+    touch flag-forcedevr
+
+    popd
+  '';
+
+  preBuild = ''
+    patchShebangs src/sys
+  '';
+
+  preInstall = ''
+    mkdir -p "$out/etc"
+  '';
+
+  meta = {
+    homepage = http://skarnet.org/software/skalibs/;
+    description = "A set of general-purpose C programming libraries.";
+    platforms = stdenv.lib.platforms.all;
+    license = stdenv.lib.licenses.isc;
+  };
+
+}

pkgs/development/libraries/skalibs/getpeereid.patch

@@ -0,0 +1,28 @@
+--- a/src/libstddjb/getpeereid.h
++++ b/src/libstddjb/getpeereid.h
+@@ -3,6 +3,14 @@
+ #ifndef GETPEEREID_H
+ #define GETPEEREID_H
+ 
++#include "sysdeps.h"
++
++#ifdef HASGETPEEREID
++/* syscall exists - do nothing */
++
++#else
++
+ extern int getpeereid (int, int *, int *) ;
+ 
+ #endif
++#endif
+--- a/src/libstddjb/ipc_eid.c
++++ b/src/libstddjb/ipc_eid.c
+@@ -5,7 +5,7 @@
+ 
+ int ipc_eid (int s, unsigned int *u, unsigned int *g)
+ {
+-  int dummyu, dummyg ;
++  unsigned int dummyu, dummyg ;
+   if (getpeereid(s, &dummyu, &dummyg) < 0) return -1 ;
+   *u = (unsigned int)dummyu ;
+   *g = (unsigned int)dummyg ;

pkgs/top-level/all-packages.nix

@@ -6169,6 +6169,8 @@ let
 
   sfml_git = callPackage ../development/libraries/sfml { };
 
+  skalibs = callPackage ../development/libraries/skalibs { };
+
   slang = callPackage ../development/libraries/slang { };
 
   slibGuile = callPackage ../development/libraries/slib {