Enable install in non-standard directory

brewstrap.sh

@@ -1,24 +1,38 @@
 #!/bin/sh
 VERSION=0.1
 ORIGWD=`pwd`
-BREWSTRAP_DIR=$HOME/.linuxbrew/Cellar/brewstrap/$VERSION
+HOMEBREW_DIR=${HOMEBREW_DIR:-$HOME}
+BREWSTRAP_DIR=$HOMEBREW_DIR/.linuxbrew/Cellar/brewstrap/$VERSION
+
+set -e
+set -x
 
 before_extraction() {
   mkdir -p $BREWSTRAP_DIR
   cd $BREWSTRAP_DIR
 }
 
 after_extraction() {
+  # Do not verify certs as they are unavailable
+  [ -e $HOME/.curlrc ] && cp $HOME/.curlrc $HOME/.curlrc.bak
+  echo '\n-k' >> $HOME/.curlrc
+  # Restore original `.curlrc` after completion
+  trap "[ -e $HOME/.curlrc.bak ] && mv $HOME/.curlrc.bak $HOME/.curlrc" EXIT
   cd $BREWSTRAP_DIR/bin
-  sed -i -e "s@/bin/bash@$BREWSTRAP_DIR/bin/bash@" *
+  # `/bin/bash` may not be available
+  find -type f | xargs sed -i -e "s@/bin/bash@$BREWSTRAP_DIR/bin/bash@"
+  # Install self. Not the best way possible, but should suffice until a better
+  # one is suggested.
   cp $1 ./brewstrap
   chmod +x brewstrap
+  # Download Linuxbrew installer
   $BREWSTRAP_DIR/bin/ruby <<-EORUBY
     require 'open-uri'
     open('linuxbrew-install', 'wb') do |file|
       file << open('https://raw.githubusercontent.com/Linuxbrew/install/master/install').read
     end
 EORUBY
+  # Substitute system paths with those provided by brewstrap
   sed -i -e "s@/bin/bash@$BREWSTRAP_DIR/bin/bash@" \
     -e "s@/usr/bin/curl@$BREWSTRAP_DIR/bin/curl@" \
     -e "s@/usr/bin/which@$(which which)@" \
@@ -28,35 +42,52 @@ EORUBY
   export PATH=$PATH:$BREWSTRAP_DIR/bin
   export MAGIC=$BREWSTRAP_DIR/share/file/magic.mgc
   export TERMINFO=$BREWSTRAP_DIR/usr/share/terminfo
-  ruby linuxbrew-install
+  # Hack to install Linuxbrew inside an arbitrary directory
+  HOME=$HOMEBREW_DIR ruby linuxbrew-install
+  export PATH=$HOMEBREW_DIR/.linuxbrew/bin:$PATH
+  # tmpfs may be noexec, better stick to something else
+  export HOMEBREW_TEMP=$HOMEBREW_DIR/.tmp
+  mkdir -p $HOMEBREW_TEMP
+  # Necessary to use dupes bottled for Linuxbrew
   brew tap homebrew/dupes git://github.com/Linuxbrew/homebrew-dupes.git
-  # Following https://github.com/Linuxbrew/brew/issues/32
-  # tput from minos returns error which may be misinterpreted in Homebrew when
-  # backticks are used. Using brewed ncurses we are safe(r).
-  brew install homebrew/dupes/ncurses
-  sed -i -e "s@$BREWSTRAP_DIR/usr/bin/tput@$HOME/.linuxbrew/bin/tput@" \
-    $HOME/.linuxbrew/Library/Homebrew/utils.rb
+  # List of essentials following https://github.com/Linuxbrew/brew/issues/32
   brew install \
-    bash \
     binutils \
+    gcc \
+    linux-headers || brew postinstall gcc
+  # glibc is unlinked since an older loader (the one in bottles) cannot work
+  # with newer glibc
+  brew install --force-bottle glibc || brew unlink glibc
+  # Enable use of keg_only glibc
+  sed -i.bak -e 's/\(.*prepend_path "LIBRARY_PATH".*\)/\1\nprepend_path "LIBRARY_PATH", Formula["glibc"].lib/' \
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/extend/ENV/std.rb
+  specfile=$(find -L $(brew --prefix gcc) -name specs|sed -ne '/\/lib\//p')
+  sed -i.brewstrap -e 's@\(.*-isystem.*\)@\1 -I'"$HOMEBREW_DIR/.linuxbrew/Cellar/glibc/$(brew info glibc|sed -ne 's/glibc: stable \(.*\)/\1/p')/include@" $specfile
+  # Perl needs this hack to compile on a system lacking /usr/include
+  sed -i -e 's@-Dprefix=#{prefix}@-Dprefix=#{prefix}\n-Dlocincpth=#{Formula["glibc"].include}@' \
+    $HOMEBREW_DIR/.linuxbrew/Library/Taps/homebrew/homebrew-core/Formula/perl.rb
+  env
+  # perl tests tend to fail, probably a FIXME
+  brew install perl --without-test
+  # gawk tests require working en_US.UTF-8 locale, another FIXME
+  yes 2|brew install --debug gawk
+  # `libblkid` requires libudev.h which is a part of `systemd` formula that depends on `util-linux` (circular dependency)
+  # `setpriv` requires cap-ng.h which is a port of `libcap-ng` that lacks formula
+  sed -i.bak -e 's/\(.*"--disable-kill".*\)/\1,\n"--disable-libblkid",\n"--disable-setpriv"/' \
+    $HOMEBREW_DIR/.linuxbrew/Library/Taps/homebrew/homebrew-core/Formula/util-linux.rb
+  brew install \
+    bash \
+    coreutils \
+    diffutils \
     file-formula \
     findutils \
-    gawk \
-    gcc \
-    glibc \
     gnu-sed \
     gnu-tar \
     gnu-which \
     grep \
-    linux-headers \
     make \
     util-linux
-  # Perl needs this hack to compile on a system lacking /usr/include
-  sed -i -e 's@-Dprefix=#{prefix}@-Dprefix=#{prefix}\n-Dlocincpth=#{Formula["glibc"].include}@' \
-    $HOME/.linuxbrew/Library/Taps/homebrew/homebrew-core/Formula/perl.rb
-  brew install perl --without-test
-  # The following depend on openssl which in turn depends on perl but doesn't
-  # want to admit it (though see: https://github.com/Linuxbrew/homebrew-core/pull/232)
+  # The following depend on openssl which in turn depends on perl
   brew install \
     curl \
     git \
@@ -71,11 +102,11 @@ fix_paths() {
     -e "s@/usr/bin/tput@$(brew --prefix ncurses)/bin/tput@" \
     -e "s@/usr/bin/which@$(brew --prefix gnu-which)/bin/which@" \
     -e "s@/usr/bin/awk@$(brew --prefix gawk)/bin/awk@" \
-    $HOME/.linuxbrew/bin/brew \
-    $HOME/.linuxbrew/Library/brew.sh \
-    $HOME/.linuxbrew/Library/ENV/scm/git \
-    $HOME/.linuxbrew/Library/Homebrew/utils.rb \
-    $HOME/.linuxbrew/Library/Homebrew/keg_relocate.rb
+    $HOMEBREW_DIR/.linuxbrew/bin/brew \
+    $HOMEBREW_DIR/.linuxbrew/Library/brew.sh \
+    $HOMEBREW_DIR/.linuxbrew/Library/ENV/scm/git \
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/utils.rb \
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/keg_relocate.rb
 }
 if [ "\$1" == "update" ]; then
   trap "fix_paths" EXIT
@@ -98,13 +129,13 @@ fix_paths() {
     -e "s@/usr/bin/tput@$BREWSTRAP_DIR/usr/bin/tput@" \
     -e "s@/usr/bin/which@$(which which)@" \
     -e "s@/usr/bin/awk@$(which awk)@" \
-    $HOME/.linuxbrew/bin/brew \
-    $HOME/.linuxbrew/Library/brew.sh \
-    $HOME/.linuxbrew/Library/ENV/scm/git \
-    $HOME/.linuxbrew/Library/Homebrew/utils.rb \
-    $HOME/.linuxbrew/Library/Homebrew/keg_relocate.rb
+    $HOMEBREW_DIR/.linuxbrew/bin/brew \
+    $HOMEBREW_DIR/.linuxbrew/Library/brew.sh \
+    $HOMEBREW_DIR/.linuxbrew/Library/ENV/scm/git \
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/utils.rb \
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/keg_relocate.rb
   sed -i.bak -e '/default_remote/N;s@https://@git://@' \
-    $HOME/.linuxbrew/Library/Homebrew/tap.rb
+    $HOMEBREW_DIR/.linuxbrew/Library/Homebrew/tap.rb
 }
 
 if [ "x$1" = "x--fixpaths" ]; then

deploy.sh

@@ -22,7 +22,9 @@ download_deps() {
   get_minos_resource bin/bash bash
   get_minos_resource bin/curl curl
   get_minos_resource bin/file file
+  get_minos_resource bin/gawk gawk
   get_minos_resource bin/git git
+  get_minos_resource bin/make make
   get_minos_resource usr/bin/tput ncurses-bin
   get_minos_resource bin/tar tar
   get_minos_resource usr/share/terminfo terminfo