[MacPorts] Migration modified

[MacPorts]

Page "Migration" was changed by dave at yost.com
Diff URL: <https://trac.macports.org/wiki/Migration?action=diff&version=79>
Revision 79
Comment: The reinstall ports shell script is better as a function.
Changes:
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Index: Migration
=========================================================================
--- Migration (version: 78)
+++ Migration (version: 79)
@@ -20,12 +20,14 @@
    source.
    a. **Update macports.conf.** If your macports.conf contains uncommented settings for universal_archs or build_arch, you will likely want to update them, since unlike earlier OS versions, the compiler on Snow Leopard and later will build for x86_64 by default on systems that support it. The default values will be fine for almost all users, so unless you know you need something different, just comment out these two lines. Several other settings in macports.conf have changed their defaults over the years. Take a moment to compare each line of your macports.conf with the corresponding line in macports.conf.default in the same directory. Unless you know a reason why a line your settings file should be different from the defaults, adopt the line from the defaults file.
 1. [=#ports] **Reinstall ports.**
-      {{{
+    {{{
+    # If there is an argument, then don't preserve 'requested' flags.
+    function reinstallPorts() {
+      dontPreserveRequestedFlags=$1
       # Save the list of installed ports.
       port -qv installed > myports.txt
       # Preserve the requested flags (optional).
-      PRESERVE_REQUESTED_FLAGS=true
-      if [[ $PRESERVE_REQUESTED_FLAGS ]] ; then
+      if [[ ! $dontPreserveRequestedFlags ]] ; then
         port echo requested | cut -d ' ' -f 1 > requested.txt
       fi
       # Uninstall all installed ports.
@@ -36,14 +38,16 @@
       curl -O https://svn.macports.org/repository/macports/contrib/restore_ports/restore_ports.tcl
       chmod +x restore_ports.tcl
       # Change this if your installation is somewhere else.
+      # (There should be a way to get the port command to report this.)
       MACPORTS_HOME=/opt/local
       # Execute the restore_ports script.
       sudo ./restore_ports.tcl -p $MACPORTS_HOME myports.txt
-      if [[ $PRESERVE_REQUESTED_FLAGS ]] ; then
+      if [[ ! $dontPreserveRequestedFlags ]] ; then
         sudo port unsetrequested installed
         < requested.txt xargs sudo port setrequested
       fi
-      }}}
+    }
+    }}}
 
 === Troubleshooting ===
 
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Page URL: <https://trac.macports.org/wiki/Migration>
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