Ignore executing install/remove scripts if XBPS_TARGET_ARCH is set.

Instead a two stage approach is necessary when packages for target arch
are installed:

	- XBPS_TARGET_ARCH=arch xbps-install foo <- only unpack
	- xbps-reconfigure -a <- configure natively or via an emulator

include/xbps_api.h.in

@@ -48,7 +48,7 @@
  */
 #define XBPS_PKGINDEX_VERSION	"1.7"
 
-#define XBPS_API_VERSION	"20130307-1"
+#define XBPS_API_VERSION	"20130307-2"
 
 #ifndef XBPS_VERSION
  #define XBPS_VERSION		"UNSET"
@@ -544,7 +544,8 @@ struct xbps_handle {
 	 */
 	char *cachedir_priv;
 	char *metadir_priv;
-	char *un_machine;
+	char *native_arch;
+	const char *target_arch;
 	/*
 	 * @var repository
 	 *

lib/initend.c

@@ -166,7 +166,6 @@ xbps_init(struct xbps_handle *xhp)
 	struct utsname un;
 	int rv, cc, cch;
 	bool syslog_enabled = false;
-	char *tarch;
 
 	assert(xhp != NULL);
 
@@ -246,15 +245,10 @@ xbps_init(struct xbps_handle *xhp)
 		return ENOMEM;
 	xhp->metadir = xhp->metadir_priv;
 
-	/* Override target arch if XBPS_TARGET_ARCH is set in the environment */
+	xhp->target_arch = getenv("XBPS_TARGET_ARCH");
-	tarch = getenv("XBPS_TARGET_ARCH");
+	uname(&un);
-	if (tarch != NULL) {
+	xhp->native_arch = strdup(un.machine);
-		xhp->un_machine = strdup(tarch);
+	assert(xhp->native_arch);
-	} else {
-		uname(&un);
-		xhp->un_machine = strdup(un.machine);
-		assert(xhp->un_machine);
-	}
 
 	if (xhp->cfg == NULL) {
 		xhp->flags |= XBPS_FLAG_SYSLOG;
@@ -283,7 +277,8 @@ xbps_init(struct xbps_handle *xhp)
 	xbps_dbg_printf(xhp, "FetchCacheconn=%u\n", cc);
 	xbps_dbg_printf(xhp, "FetchCacheconnHost=%u\n", cch);
 	xbps_dbg_printf(xhp, "Syslog=%u\n", syslog_enabled);
-	xbps_dbg_printf(xhp, "Architecture: %s\n", xhp->un_machine);
+	xbps_dbg_printf(xhp, "Architecture: %s\n", xhp->native_arch);
+	xbps_dbg_printf(xhp, "Target Architecture: %s\n", xhp->target_arch);
 
 	xhp->initialized = true;
 
@@ -307,7 +302,7 @@ xbps_end(struct xbps_handle *xhp)
 	cfg_free(xhp->cfg);
 	free(xhp->cachedir_priv);
 	free(xhp->metadir_priv);
-	free(xhp->un_machine);
+	free(xhp->native_arch);
 
 	xhp->initialized = false;
 	xhp = NULL;

lib/package_script.c

@@ -48,6 +48,12 @@ xbps_pkg_exec_buffer(struct xbps_handle *xhp,
 	assert(pkgver);
 	assert(action);
 
+	if (xhp->target_arch) {
+		xbps_dbg_printf(xhp, "%s: not executing %s "
+		    "install/remove action.\n", pkgver, action);
+		return 0;
+	}
+
 	if (strcmp(xhp->rootdir, "/") == 0) {
 		tmpdir = getenv("TMPDIR");
 		if (tmpdir == NULL)

lib/rindex_sync.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2009-2012 Juan Romero Pardines.
+ * Copyright (c) 2009-2013 Juan Romero Pardines.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -75,7 +75,7 @@ int HIDDEN
 xbps_rindex_sync(struct xbps_handle *xhp, const char *uri, const char *plistf)
 {
 	prop_dictionary_t repod;
-	const char *fetchstr = NULL;
+	const char *arch, *fetchstr = NULL;
 	char *rpidx, *lrepodir, *uri_fixedp, *lrepofile;
 	int rv = 0;
 
@@ -89,10 +89,16 @@ xbps_rindex_sync(struct xbps_handle *xhp, const char *uri, const char *plistf)
 	uri_fixedp = xbps_get_remote_repo_string(uri);
 	if (uri_fixedp == NULL)
 		return -1;
+
+	if (xhp->target_arch)
+		arch = xhp->target_arch;
+	else
+		arch = xhp->native_arch;
+
 	/*
 	 * Remote repository plist index full URL.
 	 */
-	rpidx = xbps_xasprintf("%s/%s-%s", uri, xhp->un_machine, plistf);
+	rpidx = xbps_xasprintf("%s/%s-%s", uri, arch, plistf);
 	/*
 	 * Full path to repository directory to store the plist
 	 * index file.
@@ -101,8 +107,7 @@ xbps_rindex_sync(struct xbps_handle *xhp, const char *uri, const char *plistf)
 	/*
 	 * Full path to the local repository index file.
 	 */
-	lrepofile = xbps_xasprintf("%s/%s-%s", lrepodir,
+	lrepofile = xbps_xasprintf("%s/%s-%s", lrepodir, arch, plistf);
-			xhp->un_machine, plistf);
 	/*
 	 * Create repodir in metadir.
 	 */

lib/transaction_commit.c

@@ -296,12 +296,16 @@ xbps_transaction_commit(struct xbps_handle *xhp)
 				goto out;
 		}
 	}
-	prop_object_iterator_reset(iter);
-
 	/* if there are no packages to install or update we are done */
 	if (!update && !install)
 		goto out;
 
+	/* if installing packages for target_arch, don't configure anything */
+	if (xhp->target_arch && strcmp(xhp->native_arch, xhp->target_arch))
+		goto out;
+
+	prop_object_iterator_reset(iter);
+
 	/*
 	 * Configure all unpacked packages.
 	 */

lib/util.c

@@ -175,6 +175,7 @@ get_pkg_index_remote_plist(struct xbps_handle *xhp,
 			   const char *uri,
 			   const char *plistf)
 {
+	const char *arch;
 	char *uri_fixed, *repodir;
 
 	assert(uri != NULL);
@@ -183,8 +184,13 @@ get_pkg_index_remote_plist(struct xbps_handle *xhp,
 	if (uri_fixed == NULL)
 		return NULL;
 
+	if (xhp->target_arch)
+		arch = xhp->target_arch;
+	else
+		arch = xhp->native_arch;
+
 	repodir = xbps_xasprintf("%s/%s/%s-%s", xhp->metadir,
-			uri_fixed, xhp->un_machine, plistf);
+			uri_fixed, arch, plistf);
 	free(uri_fixed);
 	return repodir;
 }
@@ -192,26 +198,39 @@ get_pkg_index_remote_plist(struct xbps_handle *xhp,
 char *
 xbps_pkg_index_plist(struct xbps_handle *xhp, const char *uri)
 {
+	const char *arch;
+
 	assert(xhp);
 	assert(uri != NULL);
 
 	if (xbps_repository_is_remote(uri))
 		return get_pkg_index_remote_plist(xhp, uri, XBPS_PKGINDEX);
 
-	return xbps_xasprintf("%s/%s-%s", uri, xhp->un_machine, XBPS_PKGINDEX);
+	if (xhp->target_arch)
+		arch = xhp->target_arch;
+	else
+		arch = xhp->native_arch;
+
+	return xbps_xasprintf("%s/%s-%s", uri, arch, XBPS_PKGINDEX);
 }
 
 char *
 xbps_pkg_index_files_plist(struct xbps_handle *xhp, const char *uri)
 {
+	const char *arch;
+
 	assert(xhp);
 	assert(uri != NULL);
 
 	if (xbps_repository_is_remote(uri))
 		return get_pkg_index_remote_plist(xhp, uri, XBPS_PKGINDEX_FILES);
 
-	return xbps_xasprintf("%s/%s-%s", uri,
+	if (xhp->target_arch)
-			xhp->un_machine, XBPS_PKGINDEX_FILES);
+		arch = xhp->target_arch;
+	else
+		arch = xhp->native_arch;
+
+	return xbps_xasprintf("%s/%s-%s", uri, arch, XBPS_PKGINDEX_FILES);
 }
 
 char HIDDEN *
@@ -270,9 +289,16 @@ xbps_pkg_arch_match(struct xbps_handle *xhp,
 		    const char *orig,
 		    const char *target)
 {
+	const char *arch;
+
+	if (xhp->target_arch)
+		arch = xhp->target_arch;
+	else
+		arch = xhp->native_arch;
+
 	if (target == NULL) {
 		if ((strcmp(orig, "noarch") == 0) ||
-		    (strcmp(orig, xhp->un_machine) == 0))
+		    (strcmp(orig, arch) == 0))
 			return true;
 	} else {
 		if ((strcmp(orig, "noarch") == 0) ||