From c9186a15a535106fe63b07ee4d9366f1a68e8966 Mon Sep 17 00:00:00 2001
From: "Yestin L. Harrison" <yestin@ylh.io>
Date: Fri, 29 Jul 2022 09:27:57 -0700
Subject: [PATCH] plan9port: use built-in ./INSTALL

---
 pkgs/tools/system/plan9port/builder.sh  | 71 ----------------------
 pkgs/tools/system/plan9port/default.nix | 80 ++++++++++++++++++-------
 2 files changed, 59 insertions(+), 92 deletions(-)
 delete mode 100644 pkgs/tools/system/plan9port/builder.sh

diff --git a/pkgs/tools/system/plan9port/builder.sh b/pkgs/tools/system/plan9port/builder.sh
deleted file mode 100644
index b5196e512f4..00000000000
--- a/pkgs/tools/system/plan9port/builder.sh
+++ /dev/null
@@ -1,71 +0,0 @@
-source $stdenv/setup
-
-export PLAN9=$out/plan9
-export PLAN9_TARGET=$PLAN9
-
-plan9portLinkFlags()
-{
-    eval set -- "$NIX_LDFLAGS"
-    local flag
-    for flag in "$@"; do
-        printf ' -Wl,%s' "$flag"
-    done
-}
-
-configurePhase()
-{
-    (
-        echo CC9=\"$(command -v $CC)\"
-        echo CFLAGS=\"$NIX_CFLAGS_COMPILE\"
-        echo LDFLAGS=\"$(plan9portLinkFlags)\"
-        echo X11=\"${libXt_dev}/include\"
-        case "$system" in
-          x86_64-*) echo OBJTYPE=x86_64;;
-          i?86-*)   echo OBJTYPE=386;;
-          *power*)  echo OBJTYPE=power;;
-          *sparc*)  echo OBJTYPE=sparc;;
-        esac
-        if [[ $system =~ .*linux.* ]]; then
-          echo SYSVERSION=2.6.x
-        fi
-    ) >config
-
-    for f in `grep -l -r /usr/local/plan9`; do
-        sed "s,/usr/local/plan9,${PLAN9},g" -i $f
-    done
-}
-
-buildPhase()
-{
-    mkdir -p $PLAN9
-
-    # Copy sources, some necessary bin scripts
-    cp -R * $PLAN9
-
-    local originalPath="$PATH"
-    export PATH="$PLAN9/bin:$PATH"
-    export NPROC=$NIX_BUILD_CORES
-    pushd src
-    ../dist/buildmk
-    mk clean
-    mk libs-nuke
-    mk all
-    mk -k install
-    if [[ -f $PLAN9/bin/quote1 ]]; then
-        cp $PLAN9/bin/quote1 $PLAN9/bin/'"'
-        cp $PLAN9/bin/quote2 $PLAN9/bin/'""'
-    fi
-    popd
-    export PATH="$originalPath"
-}
-
-installPhase()
-{
-    # Copy the `9' utility. This way you can use
-    # $ 9 awk
-    # to use the plan 9 awk
-    mkdir $out/bin
-    ln -s $PLAN9/bin/9 $out/bin
-}
-
-genericBuild
diff --git a/pkgs/tools/system/plan9port/default.nix b/pkgs/tools/system/plan9port/default.nix
index de076e181e8..3e52d10a240 100644
--- a/pkgs/tools/system/plan9port/default.nix
+++ b/pkgs/tools/system/plan9port/default.nix
@@ -2,7 +2,7 @@
 , fontconfig, freetype, libX11, libXext, libXt, xorgproto
 , Carbon, Cocoa, IOKit, Metal, QuartzCore, DarwinTools
 , perl # For building web manuals
-, which
+, which, ed
 }:
 
 stdenv.mkDerivation rec {
@@ -19,26 +19,69 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace bin/9c \
       --replace 'which uniq' '${which}/bin/which uniq'
+
+    ed -sE INSTALL <<EOF
+    # get /bin:/usr/bin out of PATH
+    /^PATH=[^ ]*/s,,PATH=\$PATH:\$PLAN9/bin,
+    # no xcbuild nonsense
+    /^if.* = Darwin/+;/^fi/-c
+    ${"\t"}export NPROC=$NIX_BUILD_CORES
+    .
+    # remove absolute include paths from fontsrv test
+    /cc -o a.out -c -I.*freetype2/;/x11.c/j
+    s/(-Iinclude).*-I[^ ]*/\1/
+    wq
+    EOF
   '';
 
-  buildInputs = [ perl ] ++ (if !stdenv.isDarwin then [
-    fontconfig
-    freetype # fontsrv wants ft2build.h
-    libX11
-    libXext
-    libXt
-    xorgproto
+  nativeBuildInputs = [ ed ];
+  buildInputs = [ perl which ] ++ (if !stdenv.isDarwin then [
+    fontconfig freetype # fontsrv uses these
+    libX11 libXext libXt xorgproto
   ] else [
-    Carbon
-    Cocoa
-    IOKit
-    Metal
-    QuartzCore
+    Carbon Cocoa IOKit Metal QuartzCore
     DarwinTools
   ]);
 
-  builder = ./builder.sh;
-  libXt_dev = libXt.dev;
+  configurePhase = ''
+    runHook preConfigure
+    cat >LOCAL.config <<EOF
+    CC9='$(command -v $CC)'
+    CFLAGS='$NIX_CFLAGS_COMPILE'
+    LDFLAGS='$(for f in $NIX_LDFLAGS; do echo "-Wl,$f"; done | xargs echo)'
+    ${lib.optionalString (!stdenv.isDarwin) "X11='${libXt.dev}/include'"}
+    EOF
+
+    # make '9' available in the path so there's some way to find out $PLAN9
+    cat >LOCAL.INSTALL <<EOF
+    #!$out/plan9/bin/rc
+    mkdir $out/bin
+    ln -s $out/plan9/bin/9 $out/bin/
+    EOF
+    chmod +x LOCAL.INSTALL
+
+    # now, not in fixupPhase, so ./INSTALL works
+    patchShebangs .
+    runHook postConfigure
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+    ./INSTALL -b
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir $out
+    cp -r . $out/plan9
+    cd $out/plan9
+
+    ./INSTALL -c
+    runHook postInstall
+  '';
+
+  dontPatchShebangs = true;
 
   doInstallCheck = true;
   installCheckPhase = ''
@@ -70,12 +113,7 @@ stdenv.mkDerivation rec {
     '';
     license = licenses.mit;
     maintainers = with maintainers; [
-      AndersonTorres
-      bbarker
-      ehmry
-      ftrvxmtrx
-      kovirobi
-      ylh
+      AndersonTorres bbarker ehmry ftrvxmtrx kovirobi ylh
     ];
     mainProgram = "9";
     platforms = platforms.unix;