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Look in target-list first to resolve dependencies

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This fixes a bug introduced by my previous changes which changes the
behavior of IgnorePkg/IgnoreGroup to allow the user to remove unresolvable
packages from the transaction.  The bug is that the target-list was no
longer being consulted first to resolve dependencies, which means that if
two packages in the sync database satisfied a dependency, and the user
explicitly requested one of those two packages in the sync, the other
package was still being pulled in.

A new test was added, sync993.py, to verify the desired behavior.

Signed-off-by: Bryan Ischo <bji-keyword-pacman.3644cb@www.ischo.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Bryan Ischo 2009-03-09 09:56:13 +13:00 committed by Dan McGee
parent d70465decc
commit db3e166503
4 changed files with 38 additions and 10 deletions
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18
lib/libalpm/deps.c
View File

@ -594,8 +594,8 @@ pmpkg_t *_alpm_resolvedep(pmdepend_t *dep, alpm_list_t *dbs,
* unmodified by this function
*/
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *pkg,
alpm_list_t **packages, alpm_list_t *remove,
alpm_list_t **data)
alpm_list_t *preferred, alpm_list_t **packages,
alpm_list_t *remove, alpm_list_t **data)
{
alpm_list_t *i, *j;
alpm_list_t *targ;
@ -632,17 +632,21 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *pkg,
if(_alpm_find_dep_satisfier(*packages, missdep)) {
continue;
}
/* find a satisfier package in the given repositories */
pmpkg_t *spkg = _alpm_resolvedep(missdep, dbs_sync, *packages, 0);
/* check if one of the packages in the [preferred] list already satisfies this dependency */
pmpkg_t *spkg = _alpm_find_dep_satisfier(preferred, missdep);
if(!spkg) {
/* find a satisfier package in the given repositories */
spkg = _alpm_resolvedep(missdep, dbs_sync, *packages, 0);
}
if(!spkg) {
pm_errno = PM_ERR_UNSATISFIED_DEPS;
char *missdepstring = alpm_dep_compute_string(missdep);
_alpm_log(PM_LOG_WARNING, _("cannot resolve \"%s\", a dependency of \"%s\"\n"),
missdepstring, tpkg->name);
missdepstring, tpkg->name);
free(missdepstring);
if(data) {
pmdepmissing_t *missd = _alpm_depmiss_new(miss->target,
miss->depend, miss->causingpkg);
miss->depend, miss->causingpkg);
if(missd) {
*data = alpm_list_add(*data, missd);
}
@ -654,7 +658,7 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *pkg,
return(-1);
} else {
_alpm_log(PM_LOG_DEBUG, "pulling dependency %s (needed by %s)\n",
alpm_pkg_get_name(spkg), alpm_pkg_get_name(tpkg));
alpm_pkg_get_name(spkg), alpm_pkg_get_name(tpkg));
*packages = alpm_list_add(*packages, spkg);
}
}

3
lib/libalpm/deps.h
View File

@ -49,7 +49,8 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, int reverse);
void _alpm_recursedeps(pmdb_t *db, alpm_list_t *targs, int include_explicit);
pmpkg_t *_alpm_resolvedep(pmdepend_t *dep, alpm_list_t *dbs, alpm_list_t *excluding, int prompt);
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *pkg,
alpm_list_t **packages, alpm_list_t *remove, alpm_list_t **data);
alpm_list_t *preferred, alpm_list_t **packages, alpm_list_t *remove,
alpm_list_t **data);
int _alpm_dep_edge(pmpkg_t *pkg1, pmpkg_t *pkg2);
pmdepend_t *_alpm_splitdep(const char *depstring);
pmpkg_t *_alpm_find_dep_satisfier(alpm_list_t *pkgs, pmdepend_t *dep);

7
lib/libalpm/sync.c
View File

@ -348,6 +348,7 @@ static int compute_download_size(pmpkg_t *newpkg)
int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **data)
{
alpm_list_t *deps = NULL;
alpm_list_t *preferred = NULL;
alpm_list_t *unresolvable = NULL;
alpm_list_t *remove = NULL; /* allow checkdeps usage with trans->packages */
alpm_list_t *i, *j;
@ -370,19 +371,21 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_START, NULL, NULL);
_alpm_log(PM_LOG_DEBUG, "resolving target's dependencies\n");
/* build remove list for resolvedeps */
/* build remove list and preferred list for resolvedeps */
for(i = trans->packages; i; i = i->next) {
pmpkg_t *spkg = i->data;
for(j = spkg->removes; j; j = j->next) {
remove = alpm_list_add(remove, j->data);
}
preferred = alpm_list_add(preferred, spkg);
}
/* Resolve packages in the transaction one at a time, in addtion
building up a list of packages which could not be resolved. */
for(i = trans->packages; i; i = i->next) {
pmpkg_t *pkg = i->data;
if(_alpm_resolvedeps(db_local, dbs_sync, pkg, &resolved, remove, data) == -1) {
if(_alpm_resolvedeps(db_local, dbs_sync, pkg, preferred,
&resolved, remove, data) == -1) {
unresolvable = alpm_list_add(unresolvable, pkg);
}
/* Else, [resolved] now additionally contains [pkg] and all of its

20
pactest/tests/sync993.py Normal file
View File

@ -0,0 +1,20 @@
self.description = "Choose a dependency satisfier (target-list vs. database)"
sp1 = pmpkg("pkg1")
sp1.depends = ["dep"]
sp2 = pmpkg("pkg2")
sp2.provides = ["dep"]
sp3 = pmpkg("pkg3")
sp3.provides = ["dep"]
for p in sp1, sp2, sp3:
self.addpkg2db("sync", p)
self.args = "-S pkg1 pkg3"
self.addrule("PACMAN_RETCODE=0")
self.addrule("PKG_EXIST=pkg1")
self.addrule("!PKG_EXIST=pkg2")
self.addrule("PKG_EXIST=pkg3")