Merge branch 'master' into nix-2.0

pkgs/build-support/bintools-wrapper/default.nix

@@ -58,7 +58,7 @@ let
     else if (with targetPlatform; isArm && isLinux)   then "${libc_lib}/lib/ld-linux*.so.3"
     else if targetPlatform.system == "aarch64-linux"  then "${libc_lib}/lib/ld-linux-aarch64.so.1"
     else if targetPlatform.system == "powerpc-linux"  then "${libc_lib}/lib/ld.so.1"
-    else if targetPlatform.system == "mips64el-linux" then "${libc_lib}/lib/ld.so.1"
+    else if targetPlatform.isMips                     then "${libc_lib}/lib/ld.so.1"
     else if targetPlatform.isDarwin                   then "/usr/lib/dyld"
     else if stdenv.lib.hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1"
     else null;
@@ -171,13 +171,20 @@ stdenv.mkDerivation {
       else if targetPlatform.isWindows then "pe"
       else "elf" + toString targetPlatform.parsed.cpu.bits;
     endianPrefix = if targetPlatform.isBigEndian then "big" else "little";
+    sep = optionalString (!targetPlatform.isMips) "-";
     arch =
       /**/ if targetPlatform.isAarch64 then endianPrefix + "aarch64"
       else if targetPlatform.isArm     then endianPrefix + "arm"
       else if targetPlatform.isx86_64  then "x86-64"
       else if targetPlatform.isi686    then "i386"
+      else if targetPlatform.isMips    then {
+          "mips"     = "btsmipn32"; # n32 variant
+          "mipsel"   = "ltsmipn32"; # n32 variant
+          "mips64"   = "btsmip";
+          "mips64el" = "ltsmip";
+        }.${targetPlatform.parsed.cpu.name}
       else throw "unknown emulation for platform: " + targetPlatform.config;
-    in targetPlatform.platform.bfdEmulation or (fmt + "-" + arch);
+    in targetPlatform.platform.bfdEmulation or (fmt + sep + arch);
 
   depsTargetTargetPropagated = extraPackages;
 

pkgs/build-support/rust/default-crate-overrides.nix

@@ -1,5 +1,5 @@
 { stdenv, pkgconfig, curl, darwin, libiconv, libgit2, libssh2,
-  openssl, sqlite, zlib, dbus_libs, dbus_glib, gdk_pixbuf, cairo, python3,
+  openssl, sqlite, zlib, dbus_libs, dbus-glib, gdk_pixbuf, cairo, python3,
   libsodium, postgresql, ... }:
 
 let
@@ -45,13 +45,13 @@ in
     buildInputs = [ pkgconfig dbus_libs ];
   };
   gobject-sys = attrs: {
-    buildInputs = [ dbus_glib ];
+    buildInputs = [ dbus-glib ];
   };
   gio-sys = attrs: {
-    buildInputs = [ dbus_glib ];
+    buildInputs = [ dbus-glib ];
   };
   gdk-pixbuf-sys = attrs: {
-    buildInputs = [ dbus_glib ];
+    buildInputs = [ dbus-glib ];
   };
   gdk-pixbuf = attrs: {
     buildInputs = [ gdk_pixbuf ];

pkgs/build-support/rust/fetchcargo.nix

@@ -21,6 +21,8 @@ stdenv.mkDerivation {
 
     export CARGO_HOME=$(mktemp -d cargo-home.XXX)
 
+    ${cargoUpdateHook}
+
     cargo vendor
 
     cp -ar vendor $out

pkgs/build-support/safe-discard-string-context.nix

@@ -1,14 +0,0 @@
-# | Discard the context of a string while ensuring that expected path
-# validity invariants hold.
-#
-# This relies on import-from-derivation, but it is only useful in
-# contexts where the string is going to be used in an
-# import-from-derivation anyway.
-#
-# safeDiscardStringContext : String → String
-{ writeText }: s:
-  builtins.seq
-    (import (writeText
-               "discard.nix"
-               "${builtins.substring 0 0 s}null\n"))
-    (builtins.unsafeDiscardStringContext s)