diff --git a/pkgs/build-support/cc-wrapper/add-flags.sh b/pkgs/build-support/cc-wrapper/add-flags.sh
index 1358b167f6ec..323ea5bfd772 100644
--- a/pkgs/build-support/cc-wrapper/add-flags.sh
+++ b/pkgs/build-support/cc-wrapper/add-flags.sh
@@ -10,6 +10,7 @@ var_templates_list=(
     NIX+CFLAGS_LINK
     NIX+CXXSTDLIB_COMPILE
     NIX+CXXSTDLIB_LINK
+    NIX+GNATFLAGS_COMPILE
 )
 var_templates_bool=(
     NIX+ENFORCE_NO_NATIVE
@@ -40,6 +41,10 @@ if [ -e @out@/nix-support/cc-cflags ]; then
     NIX_@infixSalt@_CFLAGS_COMPILE="$(< @out@/nix-support/cc-cflags) $NIX_@infixSalt@_CFLAGS_COMPILE"
 fi
 
+if [ -e @out@/nix-support/gnat-cflags ]; then
+    NIX_@infixSalt@_GNATFLAGS_COMPILE="$(< @out@/nix-support/gnat-cflags) $NIX_@infixSalt@_GNATFLAGS_COMPILE"
+fi
+
 if [ -e @out@/nix-support/cc-ldflags ]; then
     NIX_@infixSalt@_LDFLAGS+=" $(< @out@/nix-support/cc-ldflags)"
 fi
diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index f6248335052c..1b7c5750727a 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -199,6 +199,12 @@ stdenv.mkDerivation {
       fi
     ''
 
+    + optionalString cc.langAda or false ''
+      wrap ${targetPrefix}gnatmake ${./gnat-wrapper.sh} $ccPath/${targetPrefix}gnatmake
+      wrap ${targetPrefix}gnatbind ${./gnat-wrapper.sh} $ccPath/${targetPrefix}gnatbind
+      wrap ${targetPrefix}gnatlink ${./gnat-wrapper.sh} $ccPath/${targetPrefix}gnatlink
+    ''
+
     + optionalString cc.langFortran or false ''
       wrap ${targetPrefix}gfortran $wrapper $ccPath/${targetPrefix}gfortran
       ln -sv ${targetPrefix}gfortran $out/bin/${targetPrefix}g77
@@ -283,6 +289,13 @@ stdenv.mkDerivation {
       ccLDFlags+=" -L${cc_solib}/lib"
       ccCFlags+=" -B${cc_solib}/lib"
 
+    '' + optionalString cc.langAda or false ''
+      basePath=$(echo $cc/lib/*/*/*)
+      ccCFlags+=" -B$basePath -I$basePath/adainclude"
+      gnatCFlags="-I$basePath/adainclude -I$basePath/adalib"
+
+      echo "$gnatCFlags" > $out/nix-support/gnat-cflags
+    '' + ''
       echo "$ccLDFlags" > $out/nix-support/cc-ldflags
       echo "$ccCFlags" > $out/nix-support/cc-cflags
     '' + optionalString (targetPlatform.isDarwin && (libcxx != null) && (cc.isClang or false)) ''
@@ -351,6 +364,8 @@ stdenv.mkDerivation {
       hardening_unsupported_flags+=" stackprotector fortify pie pic"
     '' + optionalString targetPlatform.isNetBSD ''
       hardening_unsupported_flags+=" stackprotector fortify"
+    '' + optionalString cc.langAda or false ''
+      hardening_unsupported_flags+=" stackprotector strictoverflow"
     ''
 
     + optionalString targetPlatform.isWasm ''
diff --git a/pkgs/build-support/cc-wrapper/gnat-wrapper.sh b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
new file mode 100644
index 000000000000..15b53d76c630
--- /dev/null
+++ b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
@@ -0,0 +1,165 @@
+#! @shell@
+set -eu -o pipefail +o posix
+shopt -s nullglob
+
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
+path_backup="$PATH"
+
+# That @-vars are substituted separately from bash evaluation makes
+# shellcheck think this, and others like it, are useless conditionals.
+# shellcheck disable=SC2157
+if [[ -n "@coreutils_bin@" && -n "@gnugrep_bin@" ]]; then
+    PATH="@coreutils_bin@/bin:@gnugrep_bin@/bin"
+fi
+
+source @out@/nix-support/utils.bash
+
+# Flirting with a layer violation here.
+if [ -z "${NIX_BINTOOLS_WRAPPER_@infixSalt@_FLAGS_SET:-}" ]; then
+    source @bintools@/nix-support/add-flags.sh
+fi
+
+# Put this one second so libc ldflags take priority.
+if [ -z "${NIX_CC_WRAPPER_@infixSalt@_FLAGS_SET:-}" ]; then
+    source @out@/nix-support/add-flags.sh
+fi
+
+
+# Parse command line options and set several variables.
+# For instance, figure out if linker flags should be passed.
+# GCC prints annoying warnings when they are not needed.
+dontLink=0
+nonFlagArgs=0
+# shellcheck disable=SC2193
+
+expandResponseParams "$@"
+declare -i n=0
+nParams=${#params[@]}
+while (( "$n" < "$nParams" )); do
+    p=${params[n]}
+    p2=${params[n+1]:-} # handle `p` being last one
+    if [ "$p" = -c ]; then
+        dontLink=1
+    elif [ "$p" = -S ]; then
+        dontLink=1
+    elif [ "$p" = -E ]; then
+        dontLink=1
+    elif [ "$p" = -E ]; then
+        dontLink=1
+    elif [ "$p" = -M ]; then
+        dontLink=1
+    elif [ "$p" = -MM ]; then
+        dontLink=1
+    elif [[ "$p" = -x && "$p2" = *-header ]]; then
+        dontLink=1
+    elif [[ "$p" != -?* ]]; then
+        # A dash alone signifies standard input; it is not a flag
+        nonFlagArgs=1
+    fi
+    n+=1
+done
+
+# If we pass a flag like -Wl, then gcc will call the linker unless it
+# can figure out that it has to do something else (e.g., because of a
+# "-c" flag).  So if no non-flag arguments are given, don't pass any
+# linker flags.  This catches cases like "gcc" (should just print
+# "gcc: no input files") and "gcc -v" (should print the version).
+if [ "$nonFlagArgs" = 0 ]; then
+    dontLink=1
+fi
+
+# Optionally filter out paths not refering to the store.
+if [[ "${NIX_ENFORCE_PURITY:-}" = 1 && -n "$NIX_STORE" ]]; then
+    rest=()
+    nParams=${#params[@]}
+    declare -i n=0
+    while (( "$n" < "$nParams" )); do
+        p=${params[n]}
+        p2=${params[n+1]:-} # handle `p` being last one
+        if [ "${p:0:3}" = -L/ ] && badPath "${p:2}"; then
+            skip "${p:2}"
+        elif [ "$p" = -L ] && badPath "$p2"; then
+            n+=1; skip "$p2"
+        elif [ "${p:0:3}" = -I/ ] && badPath "${p:2}"; then
+            skip "${p:2}"
+        elif [ "$p" = -I ] && badPath "$p2"; then
+            n+=1; skip "$p2"
+        elif [ "${p:0:4}" = -aI/ ] && badPath "${p:3}"; then
+            skip "${p:3}"
+        elif [ "$p" = -aI ] && badPath "$p2"; then
+            n+=1; skip "$p2"
+        elif [ "${p:0:4}" = -aO/ ] && badPath "${p:3}"; then
+            skip "${p:3}"
+        elif [ "$p" = -aO ] && badPath "$p2"; then
+            n+=1; skip "$p2"
+        elif [ "$p" = -isystem ] && badPath "$p2"; then
+            n+=1; skip "$p2"
+        else
+            rest+=("$p")
+        fi
+        n+=1
+    done
+    # Old bash empty array hack
+    params=(${rest+"${rest[@]}"})
+fi
+
+
+# Clear march/mtune=native -- they bring impurity.
+if [ "$NIX_@infixSalt@_ENFORCE_NO_NATIVE" = 1 ]; then
+    rest=()
+    # Old bash empty array hack
+    for p in ${params+"${params[@]}"}; do
+        if [[ "$p" = -m*=native ]]; then
+            skip "$p"
+        else
+            rest+=("$p")
+        fi
+    done
+    # Old bash empty array hack
+    params=(${rest+"${rest[@]}"})
+fi
+
+if [ "$(basename $0)x" = "gnatmakex" ]; then
+    extraBefore=("--GNATBIND=@out@/bin/gnatbind" "--GNATLINK=@out@/bin/gnatlink")
+    extraAfter=($NIX_@infixSalt@_GNATFLAGS_COMPILE)
+fi
+
+if [ "$(basename $0)x" = "gnatbindx" ]; then
+    extraBefore=()
+    extraAfter=($NIX_@infixSalt@_GNATFLAGS_COMPILE)
+fi
+
+if [ "$(basename $0)x" = "gnatlinkx" ]; then
+    extraBefore=()
+    extraAfter=("--GCC=@out@/bin/gcc")
+fi
+
+# As a very special hack, if the arguments are just `-v', then don't
+# add anything.  This is to prevent `gcc -v' (which normally prints
+# out the version number and returns exit code 0) from printing out
+# `No input files specified' and returning exit code 1.
+if [ "$*" = -v ]; then
+    extraAfter=()
+    extraBefore=()
+fi
+
+# Optionally print debug info.
+if (( "${NIX_DEBUG:-0}" >= 1 )); then
+    # Old bash workaround, see ld-wrapper for explanation.
+    echo "extra flags before to @prog@:" >&2
+    printf "  %q\n" ${extraBefore+"${extraBefore[@]}"}  >&2
+    echo "original flags to @prog@:" >&2
+    printf "  %q\n" ${params+"${params[@]}"} >&2
+    echo "extra flags after to @prog@:" >&2
+    printf "  %q\n" ${extraAfter+"${extraAfter[@]}"} >&2
+fi
+
+PATH="$path_backup"
+# Old bash workaround, see above.
+exec @prog@ \
+    ${extraBefore+"${extraBefore[@]}"} \
+    ${params+"${params[@]}"} \
+    ${extraAfter+"${extraAfter[@]}"}
diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index 1adffa8174e5..c04e424b2faa 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -1,5 +1,6 @@
 { stdenv, targetPackages, fetchurl, fetchpatch, fetchFromGitHub, noSysDirs
 , langC ? true, langCC ? true, langFortran ? false
+, langAda ? false
 , langObjC ? stdenv.targetPlatform.isDarwin
 , langObjCpp ? stdenv.targetPlatform.isDarwin
 , langJava ? false
@@ -15,6 +16,7 @@
 , libelf                      # optional, for link-time optimizations (LTO)
 , isl ? null # optional, for the Graphite optimization framework.
 , zlib ? null, boehmgc ? null
+, gnatboot ? null
 , zip ? null, unzip ? null, pkgconfig ? null
 , gtk2 ? null, libart_lgpl ? null
 , libX11 ? null, libXt ? null, libSM ? null, libICE ? null, libXtst ? null
@@ -48,6 +50,8 @@ assert stdenv.hostPlatform.isDarwin -> gnused != null;
 # The go frontend is written in c++
 assert langGo -> langCC;
 
+assert langAda -> gnatboot != null;
+
 # threadsCross is just for MinGW
 assert threadsCross != null -> stdenv.targetPlatform.isWindows;
 
@@ -63,6 +67,7 @@ let majorVersion = "6";
       [ ../use-source-date-epoch.patch ]
       ++ optional (targetPlatform != hostPlatform) ../libstdc++-target.patch
       ++ optional noSysDirs ../no-sys-dirs.patch
+      ++ optional langAda ../gnat-cflags.patch
       ++ optional langFortran ../gfortran-driving.patch
       ++ optional (targetPlatform.libc == "musl") ../libgomp-dont-force-initial-exec.patch
       ++ optional (!crossStageStatic && targetPlatform.isMinGW) (fetchpatch {
@@ -200,6 +205,7 @@ stdenv.mkDerivation ({
     # The builder relies on GNU sed (for instance, Darwin's `sed' fails with
     # "-i may not be used with stdin"), and `stdenvNative' doesn't provide it.
     ++ (optional hostPlatform.isDarwin gnused)
+    ++ (optional langAda gnatboot)
     ;
 
   depsTargetTarget = optional (!crossStageStatic && threadsCross != null) threadsCross;
@@ -208,7 +214,7 @@ stdenv.mkDerivation ({
 
   preConfigure = import ../common/pre-configure.nix {
     inherit (stdenv) lib;
-    inherit version hostPlatform langJava langGo;
+    inherit version hostPlatform gnatboot langJava langAda langGo;
   };
 
   dontDisableStatic = true;
@@ -234,6 +240,7 @@ stdenv.mkDerivation ({
       langCC
       langFortran
       langJava javaAwtGtk javaAntlr javaEcj
+      langAda
       langGo
       langObjC
       langObjCpp
@@ -292,7 +299,7 @@ stdenv.mkDerivation ({
     ;
 
   passthru = {
-    inherit langC langCC langObjC langObjCpp langFortran langGo version;
+    inherit langC langCC langObjC langObjCpp langFortran langAda langGo version;
     isGNU = true;
   };
 
diff --git a/pkgs/development/compilers/gcc/9/default.nix b/pkgs/development/compilers/gcc/9/default.nix
index a6ba8c9c0f64..5785782a6718 100644
--- a/pkgs/development/compilers/gcc/9/default.nix
+++ b/pkgs/development/compilers/gcc/9/default.nix
@@ -1,5 +1,6 @@
 { stdenv, targetPackages, fetchurl, fetchpatch, noSysDirs
 , langC ? true, langCC ? true, langFortran ? false
+, langAda ? false
 , langObjC ? stdenv.targetPlatform.isDarwin
 , langObjCpp ? stdenv.targetPlatform.isDarwin
 , langGo ? false
@@ -13,6 +14,7 @@
 , libelf                      # optional, for link-time optimizations (LTO)
 , isl ? null # optional, for the Graphite optimization framework.
 , zlib ? null
+, gnatboot ? null
 , enableMultilib ? false
 , enablePlugin ? stdenv.hostPlatform == stdenv.buildPlatform # Whether to support user-supplied plug-ins
 , name ? "gcc"
@@ -35,6 +37,7 @@ assert stdenv.hostPlatform.isDarwin -> gnused != null;
 
 # The go frontend is written in c++
 assert langGo -> langCC;
+assert langAda -> gnatboot != null;
 
 # threadsCross is just for MinGW
 assert threadsCross != null -> stdenv.targetPlatform.isWindows;
@@ -54,6 +57,7 @@ let majorVersion = "9";
         url = "https://git.busybox.net/buildroot/plain/package/gcc/${version}/0900-remove-selftests.patch?id=11271540bfe6adafbc133caf6b5b902a816f5f02";
         sha256 = ""; # TODO: uncomment and check hash when available.
       }) */
+      ++ optional langAda ../gnat-cflags.patch
       ++ optional langFortran ../gfortran-driving.patch
       ++ optional (targetPlatform.libc == "musl" && targetPlatform.isPower) ../ppc-musl.patch
       ++ optional (!crossStageStatic && targetPlatform.isMinGW) (fetchpatch {
@@ -160,6 +164,7 @@ stdenv.mkDerivation ({
     # The builder relies on GNU sed (for instance, Darwin's `sed' fails with
     # "-i may not be used with stdin"), and `stdenvNative' doesn't provide it.
     ++ (optional hostPlatform.isDarwin gnused)
+    ++ (optional langAda gnatboot)
     ;
 
   depsTargetTarget = optional (!crossStageStatic && threadsCross != null) threadsCross;
@@ -168,7 +173,7 @@ stdenv.mkDerivation ({
 
   preConfigure = import ../common/pre-configure.nix {
     inherit (stdenv) lib;
-    inherit version hostPlatform langGo;
+    inherit version hostPlatform gnatboot langAda langGo;
   };
 
   dontDisableStatic = true;
@@ -193,6 +198,7 @@ stdenv.mkDerivation ({
       langC
       langCC
       langFortran
+      langAda
       langGo
       langObjC
       langObjCpp
@@ -236,7 +242,7 @@ stdenv.mkDerivation ({
     ;
 
   passthru = {
-    inherit langC langCC langObjC langObjCpp langFortran langGo version;
+    inherit langC langCC langObjC langObjCpp langAda langFortran langGo version;
     isGNU = true;
   };
 
diff --git a/pkgs/development/compilers/gcc/common/configure-flags.nix b/pkgs/development/compilers/gcc/common/configure-flags.nix
index aa0fcb506289..c78a28148951 100644
--- a/pkgs/development/compilers/gcc/common/configure-flags.nix
+++ b/pkgs/development/compilers/gcc/common/configure-flags.nix
@@ -16,6 +16,7 @@
 , langCC
 , langFortran
 , langJava ? false, javaAwtGtk ? false, javaAntlr ? null, javaEcj ? null
+, langAda ? false
 , langGo
 , langObjC
 , langObjCpp
@@ -115,6 +116,7 @@ let
           ++ lib.optional langCC       "c++"
           ++ lib.optional langFortran  "fortran"
           ++ lib.optional langJava     "java"
+          ++ lib.optional langAda      "ada"
           ++ lib.optional langGo       "go"
           ++ lib.optional langObjC     "objc"
           ++ lib.optional langObjCpp   "obj-c++"
@@ -140,6 +142,9 @@ let
       "--enable-cloog-backend=isl"
     ]
 
+    # Ada options
+    ++ lib.optional langAda "--enable-libada"
+
     # Java options
     ++ lib.optionals langJava [
       "--with-ecj-jar=${javaEcj}"
diff --git a/pkgs/development/compilers/gcc/common/pre-configure.nix b/pkgs/development/compilers/gcc/common/pre-configure.nix
index 4c86d37e2434..85b854e19b9a 100644
--- a/pkgs/development/compilers/gcc/common/pre-configure.nix
+++ b/pkgs/development/compilers/gcc/common/pre-configure.nix
@@ -1,6 +1,11 @@
-{ lib, version, hostPlatform, langJava ? false, langGo }:
+{ lib, version, hostPlatform
+, gnatboot ? null
+, langAda ? false
+, langJava ? false
+, langGo }:
 
 assert langJava -> lib.versionOlder version "7";
+assert langAda -> gnatboot != null;
 
 lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) ''
   export NIX_LDFLAGS=`echo $NIX_LDFLAGS | sed -e s~$prefix/lib~$prefix/lib/amd64~g`
@@ -9,4 +14,6 @@ lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) ''
   export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
 '' + lib.optionalString (lib.versionOlder version "7" && (langJava || langGo)) ''
   export lib=$out;
+'' + lib.optionalString langAda ''
+  export PATH=${gnatboot}/bin:$PATH
 ''
diff --git a/pkgs/development/compilers/gcc/gnat-cflags.patch b/pkgs/development/compilers/gcc/gnat-cflags.patch
new file mode 100644
index 000000000000..a16266bbf39c
--- /dev/null
+++ b/pkgs/development/compilers/gcc/gnat-cflags.patch
@@ -0,0 +1,35 @@
+diff --git a/gcc/ada/gcc-interface/Makefile.in b/gcc/ada/gcc-interface/Makefile.in
+index 4e74252bd74..0d848b5b4e3 100644
+--- a/gcc/ada/gcc-interface/Makefile.in
++++ b/gcc/ada/gcc-interface/Makefile.in
+@@ -111,7 +111,7 @@ NO_OMIT_ADAFLAGS = -fno-omit-frame-pointer
+ NO_SIBLING_ADAFLAGS = -fno-optimize-sibling-calls
+ NO_REORDER_ADAFLAGS = -fno-toplevel-reorder
+ GNATLIBFLAGS = -W -Wall -gnatpg -nostdinc
+-GNATLIBCFLAGS = -g -O2
++GNATLIBCFLAGS = -g -O2 $(CFLAGS_FOR_TARGET)
+ # Pretend that _Unwind_GetIPInfo is available for the target by default.  This
+ # should be autodetected during the configuration of libada and passed down to
+ # here, but we need something for --disable-libada and hope for the best.
+@@ -198,7 +198,7 @@ RTSDIR = rts$(subst /,_,$(MULTISUBDIR))
+ # Link flags used to build gnat tools.  By default we prefer to statically
+ # link with libgcc to avoid a dependency on shared libgcc (which is tricky
+ # to deal with as it may conflict with the libgcc provided by the system).
+-GCC_LINK_FLAGS=-static-libstdc++ -static-libgcc
++GCC_LINK_FLAGS=-static-libstdc++ -static-libgcc $(CFLAGS_FOR_TARGET)
+
+ # End of variables for you to override.
+
+diff --git a/libada/Makefile.in b/libada/Makefile.in
+index 522b9207326..ca866c74471 100644
+--- a/libada/Makefile.in
++++ b/libada/Makefile.in
+@@ -59,7 +59,7 @@ LDFLAGS=
+ CFLAGS=-g
+ PICFLAG = @PICFLAG@
+ GNATLIBFLAGS= -W -Wall -gnatpg -nostdinc
+-GNATLIBCFLAGS= -g -O2
++GNATLIBCFLAGS= -g -O2 $(CFLAGS)
+ GNATLIBCFLAGS_FOR_C = -W -Wall $(GNATLIBCFLAGS) $(CFLAGS_FOR_TARGET) \
+        -fexceptions -DIN_RTS @have_getipinfo@ @have_capability@
+
diff --git a/pkgs/development/compilers/gnatboot/default.nix b/pkgs/development/compilers/gnatboot/default.nix
new file mode 100644
index 000000000000..cb643d6123a6
--- /dev/null
+++ b/pkgs/development/compilers/gnatboot/default.nix
@@ -0,0 +1,51 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  pname = "gentoo-gnatboot";
+  version = "4.1";
+
+  src = if stdenv.system == "i686-linux" then
+    fetchurl {
+      url = mirror://gentoo/distfiles/gnatboot-4.1-i386.tar.bz2;
+      sha256 = "0665zk71598204bf521vw68i5y6ccqarq9fcxsqp7ccgycb4lysr";
+    }
+  else if stdenv.system == "x86_64-linux" then
+    fetchurl {
+      url = mirror://gentoo/distfiles/gnatboot-4.1-amd64.tar.bz2;
+      sha256 = "1li4d52lmbnfs6llcshlbqyik2q2q4bvpir0f7n38nagp0h6j0d4";
+    }
+  else
+    throw "Platform not supported";
+
+  dontStrip = 1;
+
+  installPhase = ''
+    mkdir -p $out
+    cp -R * $out
+
+    set +e
+    for a in $out/bin/* ; do
+      patchelf --interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
+        --set-rpath $(cat $NIX_CC/nix-support/orig-libc)/lib:$(cat $NIX_CC/nix-support/orig-cc)/lib64:$(cat $NIX_CC/nix-support/orig-cc)/lib $a
+    done
+    set -e
+
+    mv $out/bin/gnatgcc_2wrap $out/bin/gnatgcc
+    ln -s $out/bin/gnatgcc $out/bin/gcc
+  '';
+
+  passthru = {
+    langC = true; # TRICK for gcc-wrapper to wrap it
+    langCC = false;
+    langFortran = false;
+    langAda = true;
+  };
+
+  meta = with stdenv.lib; {
+    homepage = "https://gentoo.org";
+    license = licenses.gpl3Plus;
+    maintainers = [ maintainers.lucus16 ];
+
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1fc209f44bbb..a869ce066bf3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8396,6 +8396,28 @@ in
     inherit (gnome2) libart_lgpl;
   });
 
+  gnat = gnat9;
+
+  gnat6 = wrapCC (gcc6.cc.override {
+    name = "gnat";
+    langC = true;
+    langCC = false;
+    langAda = true;
+    profiledCompiler = false;
+    inherit gnatboot;
+  });
+
+  gnat9 = wrapCC (gcc9.cc.override {
+    name = "gnat";
+    langC = true;
+    langCC = false;
+    langAda = true;
+    profiledCompiler = false;
+    gnatboot = gnat6;
+  });
+
+  gnatboot = wrapCC (callPackage ../development/compilers/gnatboot { });
+
   gnu-smalltalk = callPackage ../development/compilers/gnu-smalltalk { };
 
   gccgo = gccgo6;