1 files changed, 123 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/open-watcom/bin.nix b/nixpkgs/pkgs/development/compilers/open-watcom/bin.nix
new file mode 100644
index 000000000000..81d321c04620
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/open-watcom/bin.nix
@@ -0,0 +1,123 @@
+{ lib, stdenvNoCC, fetchurl, qemu, expect, writeScript, writeScriptBin, ncurses, bash, coreutils }:
+
+let
+
+  # We execute all OpenWatcom binaries in qemu-user, because otherwise
+  # some binaries (most notably the installer itself and wlib) fail to
+  # use the stat() systemcall. The failure mode is that it returns
+  # EOVERFLOW for completely legitimate requests. This seems like an
+  # incompatibility of new Linux kernels to run this ancient binary.
+  wrapLegacyBinary = writeScript "wrapLegacyBinary" ''
+    #!${bash}/bin/bash
+
+    set -eu
+
+    if [ $# -ne 2 ]; then
+       echo "Usage: $0 unwrapped-binary wrapped-binary"
+       exit 1
+    fi
+
+    IN="$(${coreutils}/bin/realpath $1)"
+    OUT="$2"
+    ARGV0="$(basename $2)"
+
+    cat > "$OUT" <<EOF
+    #!${bash}/bin/bash
+
+    TERMINFO=${ncurses}/share/terminfo TERM=vt100 exec ${qemu}/bin/qemu-i386 -0 $ARGV0 $IN "\$@"
+    EOF
+
+    chmod +x "$OUT"
+  '';
+
+  wrapInPlace = writeScriptBin "wrapInPlace" ''
+    #!${bash}/bin/bash
+
+    set -eu
+
+    if [ $# -ne 1 ]; then
+       echo "Usage: $0 unwrapped-binary"
+       exit 1
+    fi
+
+    TARGET="$1"
+
+    mv "$TARGET" "$TARGET-unwrapped"
+    chmod +x "$TARGET-unwrapped"
+
+    exec ${wrapLegacyBinary} "$TARGET-unwrapped" "$TARGET"
+  '';
+
+  # Do a scripted installation of OpenWatcom with its original installer.
+  #
+  # If maintaining this expect script turns out to be too much of a
+  # hassle, we can switch to just using `unzip' on the installer and
+  # the correct file permissions manually.
+  performInstall = writeScriptBin "performInstall" ''
+    #!${expect}/bin/expect -f
+
+    spawn [lindex $argv 0]
+
+    # Wait for button saying "I agree" with escape sequences.
+    expect "gree"
+
+    # Navigate to "I Agree!" and hit enter.
+    send "\t\t\n"
+
+    expect "Install Open Watcom"
+
+    # Where do we want to install to.
+    send "$env(out)\n"
+
+    expect "will be installed"
+
+    # Select Full Installation, Next
+    send "fn"
+
+    expect "Setup will now copy"
+
+    # Next
+    send "n"
+
+    expect "completed successfully"
+    send "\n"
+  '';
+
+in
+stdenvNoCC.mkDerivation rec {
+  pname = "open-watcom-bin";
+  version = "1.9";
+  name = "${pname}-unwrapped-${version}";
+
+  src = fetchurl {
+    url = "http://ftp.openwatcom.org/install/open-watcom-c-linux-${version}";
+    sha256 = "1wzkvc6ija0cjj5mcyjng5b7hnnc5axidz030c0jh05pgvi4nj7p";
+  };
+
+  nativeBuildInputs = [ wrapInPlace performInstall ];
+
+  dontUnpack = true;
+  dontConfigure = true;
+
+  buildPhase = ''
+    cp ${src} install-bin-unwrapped
+    wrapInPlace install-bin-unwrapped
+  '';
+
+  installPhase = ''
+    performInstall ./install-bin-unwrapped
+
+    for e in $(find $out/binl -type f -executable); do
+      echo "Wrapping $e"
+      wrapInPlace "$e"
+    done
+  '';
+
+  meta = with lib; {
+    description = "A C/C++ Compiler (binary distribution)";
+    homepage = "http://www.openwatcom.org/";
+    license = licenses.watcom;
+    platforms = [ "x86_64-linux" "i686-linux" ];
+    maintainers = [ maintainers.blitz ];
+  };
+}