Default python is 3.6?

[Steve Kargl]

On Fri, Apr 12, 2019 at 11:18:50PM +0200, Dima Pasechnik wrote:
> 
> So there is more "software bureaucracy" here than just applying one patch.
> 

% cd /usr/ports/lang
% svn status
A       python27/files/patch-Modules___mathmodule.c
A       python35/files/patch-Modules___mathmodule.c
A       python36/files/patch-Modules___mathmodule.c
% svn diff python27/files/patch-Modules___mathmodule.c \
           python35/files/patch-Modules___mathmodule.c \
           python36/files/patch-Modules___mathmodule.c > py.diff
% cat py.diff
Index: python27/files/patch-Modules___mathmodule.c
===================================================================
--- python27/files/patch-Modules___mathmodule.c	(nonexistent)
+++ python27/files/patch-Modules___mathmodule.c	(working copy)
@@ -0,0 +1,38 @@
+--- ./Modules/mathmodule.c.orig	2019-04-12 10:00:28.518460000 -0700
++++ ./Modules/mathmodule.c	2019-04-12 10:01:24.846412000 -0700
+@@ -71,7 +71,7 @@
+ static const double sqrtpi = 1.772453850905516027298167483341145182798;
+ 
+ static double
+-sinpi(double x)
++_freebsd_ports_are_broken_sinpi(double x)
+ {
+     double y, r;
+     int n;
+@@ -270,7 +270,7 @@
+        integer. */
+     if (absx > 200.0) {
+         if (x < 0.0) {
+-            return 0.0/sinpi(x);
++            return 0.0/_freebsd_ports_are_broken_sinpi(x);
+         }
+         else {
+             errno = ERANGE;
+@@ -294,7 +294,7 @@
+     }
+     z = z * lanczos_g / y;
+     if (x < 0.0) {
+-        r = -pi / sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
++        r = -pi / _freebsd_ports_are_broken_sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
+         r -= z * r;
+         if (absx < 140.0) {
+             r /= pow(y, absx - 0.5);
+@@ -366,7 +366,7 @@
+             (x-0.5)*(log(x+lanczos_g-0.5)-1);
+     }
+     else {
+-        r = log(pi) - log(fabs(sinpi(absx))) - log(absx) -
++        r = log(pi) - log(fabs(_freebsd_ports_are_broken_sinpi(absx))) - log(absx) -
+             (log(lanczos_sum(absx)) - lanczos_g +
+              (absx-0.5)*(log(absx+lanczos_g-0.5)-1));
+     }

Index: python35/files/patch-Modules___mathmodule.c
===================================================================
--- python35/files/patch-Modules___mathmodule.c	(nonexistent)
+++ python35/files/patch-Modules___mathmodule.c	(working copy)
@@ -0,0 +1,38 @@
+--- ./Modules/mathmodule.c.orig	2019-04-12 14:35:01.873406000 -0700
++++ ./Modules/mathmodule.c	2019-04-12 14:35:42.751667000 -0700
+@@ -67,7 +67,7 @@
+ static const double logpi = 1.144729885849400174143427351353058711647;
+ 
+ static double
+-sinpi(double x)
++_freebsd_ports_are_broken_sinpi(double x)
+ {
+     double y, r;
+     int n;
+@@ -296,7 +296,7 @@
+        integer. */
+     if (absx > 200.0) {
+         if (x < 0.0) {
+-            return 0.0/sinpi(x);
++            return 0.0/_freebsd_ports_are_broken_sinpi(x);
+         }
+         else {
+             errno = ERANGE;
+@@ -320,7 +320,7 @@
+     }
+     z = z * lanczos_g / y;
+     if (x < 0.0) {
+-        r = -pi / sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
++        r = -pi / _freebsd_ports_are_broken_sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
+         r -= z * r;
+         if (absx < 140.0) {
+             r /= pow(y, absx - 0.5);
+@@ -390,7 +390,7 @@
+     r += (absx - 0.5) * (log(absx + lanczos_g - 0.5) - 1);
+     if (x < 0.0)
+         /* Use reflection formula to get value for negative x. */
+-        r = logpi - log(fabs(sinpi(absx))) - log(absx) - r;
++        r = logpi - log(fabs(_freebsd_ports_are_broken_sinpi(absx))) - log(absx) - r;
+     if (Py_IS_INFINITY(r))
+         errno = ERANGE;
+     return r;

Index: python36/files/patch-Modules___mathmodule.c
===================================================================
--- python36/files/patch-Modules___mathmodule.c	(nonexistent)
+++ python36/files/patch-Modules___mathmodule.c	(working copy)
@@ -0,0 +1,38 @@
+--- ./Modules/mathmodule.c.orig	2019-04-12 09:23:42.329350000 -0700
++++ ./Modules/mathmodule.c	2019-04-12 09:24:37.977029000 -0700
+@@ -67,7 +67,7 @@
+ static const double logpi = 1.144729885849400174143427351353058711647;
+ 
+ static double
+-sinpi(double x)
++_freebsd_port_are_broken_sinpi(double x)
+ {
+     double y, r;
+     int n;
+@@ -296,7 +296,7 @@
+        integer. */
+     if (absx > 200.0) {
+         if (x < 0.0) {
+-            return 0.0/sinpi(x);
++            return 0.0/_freebsd_port_are_broken_sinpi(x);
+         }
+         else {
+             errno = ERANGE;
+@@ -320,7 +320,7 @@
+     }
+     z = z * lanczos_g / y;
+     if (x < 0.0) {
+-        r = -pi / sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
++        r = -pi / _freebsd_port_are_broken_sinpi(absx) / absx * exp(y) / lanczos_sum(absx);
+         r -= z * r;
+         if (absx < 140.0) {
+             r /= pow(y, absx - 0.5);
+@@ -390,7 +390,7 @@
+     r += (absx - 0.5) * (log(absx + lanczos_g - 0.5) - 1);
+     if (x < 0.0)
+         /* Use reflection formula to get value for negative x. */
+-        r = logpi - log(fabs(sinpi(absx))) - log(absx) - r;
++        r = logpi - log(fabs(_freebsd_port_are_broken_sinpi(absx))) - log(absx) - r;
+     if (Py_IS_INFINITY(r))
+         errno = ERANGE;
+     return r;

-- 
Steve