[PATCH] bitbake.conf/sstate.bbclass: Change PATH when installing sstate files to avoid issues

[Richard Purdie <richard.purdie@linuxfoundation.org>]

This resolves issues related to pigz-native when installing from sstate that people 
have been seeing. It also gives us a way to solve issues like the gzip-native race 
during sstate package creation covered in Yocto #1774.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 0d16d11..1570654 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -153,6 +153,12 @@ def sstate_installpkg(ss, d):
         bb.mkdirhier(dir)
         oe.path.remove(dir)
 
+    # We're adding binaries into the sysroots, we don't want to execute them
+    # whilst they're half installed or being installed so we need to
+    # remove the sysroots from PATH
+    savedpath = d.getVar("PATH")
+    d.setVar("PATH", "${ORIGPATH}")
+
     sstateinst = d.expand("${WORKDIR}/sstate-install-%s/" % ss['name'])
     sstatepkg = d.getVar('SSTATE_PKG', True) + '_' + ss['name'] + ".tgz"
 
@@ -190,6 +196,8 @@ def sstate_installpkg(ss, d):
         # conflict with another writer
         os.remove(fixmefn)
 
+    d.setVar("PATH", savedpath)
+
     for state in ss['dirs']:
         prepdir(state[1])
         os.rename(sstateinst + state[0], state[1])
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index d4357d1..145a9a2 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -401,6 +401,7 @@ EXTRA_IMAGEDEPENDS = ""
 # Toolchain info.
 ##################################################################
 
+ORIGPATH := "${PATH}"
 PATH_prepend = "${STAGING_BINDIR_TOOLCHAIN}:${STAGING_BINDIR_CROSS}:${STAGING_DIR_NATIVE}${sbindir_native}:${STAGING_BINDIR_NATIVE}:${STAGING_DIR_NATIVE}${base_sbindir_native}:${STAGING_DIR_NATIVE}/${base_bindir_native}:"
 export PATH