<s>
pkgsrc	B-Application
(	O
package	O
source	O
)	O
is	O
a	O
package	B-Application
management	I-Application
system	I-Application
for	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
It	O
was	O
forked	O
from	O
the	O
FreeBSD	B-Application
ports	I-Application
collection	I-Application
in	O
1997	O
as	O
the	O
primary	O
package	B-Application
management	I-Application
system	I-Application
for	O
NetBSD	B-Device
.	O
</s>
<s>
Since	O
then	O
it	O
has	O
evolved	O
independently	O
;	O
in	O
1999	O
,	O
support	O
for	O
Solaris	B-Application
was	O
added	O
,	O
followed	O
by	O
support	O
for	O
other	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
pkgsrc	B-Application
currently	O
contains	O
over	O
22,000	O
packages	O
and	O
includes	O
most	O
popular	O
open-source	B-Application
software	I-Application
.	O
</s>
<s>
It	O
is	O
the	O
native	O
package	B-Application
manager	I-Application
on	O
NetBSD	B-Device
,	O
SmartOS	O
and	O
MINIX	B-Application
3	I-Application
,	O
and	O
is	O
portable	O
across	O
23	O
different	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
AIX	B-Application
,	O
various	O
BSD	B-Operating_System
derivatives	O
,	O
HP-UX	B-Application
,	O
IRIX	B-Operating_System
,	O
Linux	B-Application
,	O
macOS	B-Application
,	O
Solaris	B-Application
,	O
and	O
QNX	B-Operating_System
.	O
</s>
<s>
There	O
are	O
multiple	O
ways	O
to	O
install	O
programs	O
using	O
pkgsrc	B-Application
.	O
</s>
<s>
The	O
pkgsrc	B-Application
bootstrap	B-Application
contains	O
a	O
traditional	O
ports	B-Application
collection	I-Application
that	O
utilizes	O
a	O
series	O
of	O
makefiles	B-Application
to	O
compile	O
software	O
from	O
source	O
.	O
</s>
<s>
A	O
high-level	O
utility	O
named	O
also	O
exists	O
,	O
and	O
is	O
designed	O
to	O
automate	O
the	O
installation	O
,	O
removal	O
,	O
and	O
update	O
of	O
binary	O
packages	O
in	O
a	O
manner	O
similar	O
to	O
Debian	O
's	O
Advanced	B-Application
Packaging	I-Application
Tool	I-Application
.	O
</s>
<s>
Several	O
vendors	O
,	O
including	O
,	O
provide	O
binary	O
packages	O
for	O
popular	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
macOS	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
On	O
October	O
3	O
,	O
1997	O
,	O
NetBSD	B-Device
developers	O
Alistair	O
Crooks	O
and	O
Hubert	O
Feyrer	O
created	O
pkgsrc	B-Application
based	O
on	O
the	O
FreeBSD	B-Application
ports	I-Application
system	O
and	O
intended	O
to	O
support	O
the	O
NetBSD	B-Device
packages	O
collection	O
.	O
</s>
<s>
It	O
was	O
officially	O
released	O
as	O
part	O
of	O
NetBSD	B-Device
1.3	O
on	O
January	O
4	O
,	O
1998	O
.	O
</s>
<s>
DragonFly	B-Application
BSD	I-Application
used	O
pkgsrc	B-Application
as	O
its	O
official	O
package	O
system	O
from	O
version	O
1.4	O
in	O
2006	O
,	O
to	O
3.4	O
in	O
2013	O
.	O
</s>
<s>
On	O
2017-09-12	O
,	O
a	O
commit	O
message	O
policy	O
that	O
accommodates	O
DVCS	B-Protocol
was	O
established	O
by	O
the	O
project	O
.	O
</s>
<s>
The	O
NetBSD	B-Device
Foundation	O
provides	O
official	O
,	O
pre-built	O
binary	O
packages	O
for	O
multiple	O
combinations	O
of	O
NetBSD	B-Device
and	O
pkgsrc	B-Application
releases	O
,	O
and	O
occasionally	O
for	O
certain	O
other	O
operating	B-General_Concept
systems	I-General_Concept
as	O
well	O
.	O
</s>
<s>
Since	O
at	O
least	O
2014	O
,	O
Joyent	B-General_Concept
has	O
provided	O
binary	O
packages	O
for	O
SmartOS/illumos	O
,	O
macOS	B-Application
,	O
and	O
Enterprise	O
Linux	B-Application
(	O
CentOS/Oracle/Red	O
Hat/Scientific	O
)	O
.	O
</s>
<s>
Packages	O
are	O
provided	O
on	O
a	O
rolling	O
release	O
basis	O
from	O
the	O
trunk	B-General_Concept
(	O
HEAD	O
,	O
in	O
CVS	B-Application
terminology	O
)	O
of	O
pkgsrc	B-Application
,	O
with	O
updates	O
every	O
few	O
days	O
;	O
additionally	O
,	O
quarterly	O
stable	O
releases	O
of	O
pkgsrc	B-Application
for	O
Joyent	B-General_Concept
's	O
own	O
SmartOS	O
are	O
also	O
provided	O
(	O
dating	O
back	O
to	O
2012Q4	O
)	O
.	O
</s>
<s>
Since	O
2017	O
,	O
University	O
of	O
Wisconsin	O
–	O
Milwaukee	O
has	O
provided	O
binary	O
packages	O
for	O
NetBSD	B-Device
,	O
RHEL/CentOS	O
,	O
and	O
Darwin/macOS	O
.	O
</s>
<s>
Packages	O
are	O
only	O
built	O
from	O
the	O
quarterly	O
releases	O
of	O
pkgsrc	B-Application
,	O
aiding	O
use	O
in	O
long-term	O
experiments	O
,	O
where	O
stability	O
and	O
reproducibility	O
of	O
the	O
findings	O
is	O
of	O
the	O
essence	O
.	O
</s>
