remove stdenv.isBSD

pkgs/tools/archivers/sharutils/default.nix

@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     ''
        # Fix for building on Glibc 2.16.  Won't be needed once the
        # gnulib in sharutils is updated.
-       sed -i ${stdenv.lib.optionalString (stdenv.isBSD && stdenv.cc.nativeTools) "''"} '/gets is a security hole/d' lib/stdio.in.h
+       sed -i ${stdenv.lib.optionalString ((stdenv.isFreeBSD || stdenv.isOpenBSD || stdenv.isDarwin) && stdenv.cc.nativeTools) "''"} '/gets is a security hole/d' lib/stdio.in.h
     '';
 
   # GNU Gettext is needed on non-GNU platforms.
@@ -26,7 +26,6 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Tools for remote synchronization and `shell archives'";
-
     longDescription =
       '' GNU shar makes so-called shell archives out of many files, preparing
          them for transmission by electronic mail services.  A shell archive
@@ -43,11 +42,8 @@ stdenv.mkDerivation rec {
          by a copy of the shell. unshar may also process files containing
          concatenated shell archives.
       '';
-
     homepage = http://www.gnu.org/software/sharutils/;
-
     license = stdenv.lib.licenses.gpl3Plus;
-
     maintainers = [ ];
     platforms = stdenv.lib.platforms.all;
   };

pkgs/tools/archivers/zpaq/default.nix

@@ -1,4 +1,4 @@
-{stdenv, fetchurl, unzip}:
+{ stdenv, fetchurl, unzip }:
 let
   s = # Generated upstream information
   rec {
@@ -12,7 +12,7 @@ let
   buildInputs = [
     unzip
   ];
-  isUnix = stdenv.isLinux || stdenv.isGNU || stdenv.isDarwin || stdenv.isBSD;
+  isUnix = with stdenv; isLinux || isGNU || isDarwin || isFreeBSD || isOpenBSD;
   isx86 = stdenv.isi686 || stdenv.isx86_64;
   compileFlags = ""
     + (stdenv.lib.optionalString isUnix " -Dunix -pthread ")

pkgs/tools/archivers/zpaq/zpaqd.nix

@@ -1,4 +1,4 @@
-{stdenv, fetchurl, unzip}:
+{ stdenv, fetchurl, unzip }:
 let
   s = # Generated upstream information
   rec {
@@ -12,7 +12,7 @@ let
   buildInputs = [
     unzip
   ];
-  isUnix = stdenv.isLinux || stdenv.isGNU || stdenv.isDarwin || stdenv.isBSD;
+  isUnix = with stdenv; isLinux || isGNU || isDarwin || isFreeBSD || isOpenBSD;
   isx86 = stdenv.isi686 || stdenv.isx86_64;
   compileFlags = ""
     + (stdenv.lib.optionalString isUnix " -Dunix -pthread ")

pkgs/tools/system/tree/default.nix

@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{ stdenv, fetchurl }:
 
 let
   version = "1.7.0";
@@ -6,17 +6,17 @@ let
   # These settings are found in the Makefile, but there seems to be no
   # way to select one ore the other setting other than editing the file
   # manually, so we have to duplicate the know how here.
-  systemFlags =
-    if stdenv.isDarwin then ''
+  systemFlags = with stdenv;
+    if isDarwin then ''
       CFLAGS="-O2 -Wall -fomit-frame-pointer"
       LDFLAGS=
       EXTRA_OBJS=strverscmp.o
-    '' else if stdenv.isCygwin then ''
+    '' else if isCygwin then ''
       CFLAGS="-O2 -Wall -fomit-frame-pointer -DCYGWIN"
       LDFLAGS=-s
       TREE_DEST=tree.exe
       EXTRA_OBJS=strverscmp.o
-    '' else if stdenv.isBSD then ''
+    '' else if (isFreeBSD || isOpenBSD) then ''
       CFLAGS="-O2 -Wall -fomit-frame-pointer"
       LDFLAGS=-s
       EXTRA_OBJS=strverscmp.o