Upgrade: Flint 2.7.1

[slel]

This is to upgrade to Flint 2.7.1.

Our last upgrade was to Flint 2.6.3 in #29719.

Changes in FLINT 2.7.0 (from NEWS file)

2.7.0 -- 11 Dec 2020

• Multivariate factorisation
• Square root and square testing for finite fields
• Square root and square testing for multivariates
• Zassenhaus factoring speedups (incl. degree pruning)
• Fast factorisation of cubic univariate polynomials
• Add context objects to fmpz_mod_poly functions
• Use BLAS for matrix multiplication over Z/nZ (small n)
• Linear solving for non-square/singular matrices (can_solve)
• Speed up factorisation over Z/nZ (for multiprecision n)

From the packaging point of view the main changes will be

• configuring BLAS
• pthread support
• context object in fmpz_mod_poly function (API change)

Related:

• upstream e-antic issue e-antic build failure with flint 2.7.0 flatsurf/e-antic#154
• Meta-ticket: Use new features from FLINT 2.x, 3.x #31408: Meta-ticket: Use new features from FLINT 2.x

Depends on #25993

CC: @antonio-rojas @dimpase @kiwifb @timokau @isuruf @orlitzky @mkoeppe @slel @saraedum @videlec @kliem

Component: packages: standard

Keywords: upgrade, flint

Author: Vincent Delecroix, Matthias Koeppe

Branch/Commit: 8c71a1c

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/31069

[slel]

comment:1

Flint 2.7-rc2 is out. Can someone test with Sage?

• https://github.com/wbhart/flint2/releases
• sage-devel announcement: flint 2.7.0 rc1, rc2

[kiwifb]

Description changed:

--- 
+++ 
@@ -1,3 +1,18 @@
 This is to upgrade to Flint 2.7.0.
 
 Our last upgrade was to Flint 2.6.3 in #29719.
+
+Changes planned in 2.7.0 (from NEWS file)
+2.7.0 -- 11 Dec 2020
+
+* Multivariate factorisation
+* Square root and square testing for finite fields
+* Square root and square testing for multivariates
+* Zassenhaus factoring speedups (incl. degree pruning)
+* Fast factorisation of cubic univariate polynomials
+* Add context objects to fmpz_mod_poly functions
+* Use BLAS for matrix multiplication over Z/nZ (small n)
+* Linear solving for non-square/singular matrices (can_solve)
+* Speed up factorisation over Z/nZ (for multiprecision n)
+
+From the packaging point of view the main change will be configuring BLAS. 

[kiwifb]

Description changed:

--- 
+++ 
@@ -3,6 +3,7 @@
 Our last upgrade was to Flint 2.6.3 in #29719.
 
 Changes planned in 2.7.0 (from NEWS file)
+
 2.7.0 -- 11 Dec 2020
 
 * Multivariate factorisation

[slel]

comment:4

Flint 2.7.0 was released today (2020-12-18).

[antonio-rojas]

comment:5

singular and e-antic fail to build due to the API changes in fmpz_mod_poly

[antonio-rojas]

comment:6

Actually, Singular is fixed in the (just released) 4.2.0 version. Unfortunately doesn't help much since the Singular upgrade has been stuck for years in #25993

[videlec]

Description changed:

--- 
+++ 
@@ -16,4 +16,6 @@
 * Linear solving for non-square/singular matrices (can_solve)
 * Speed up factorisation over Z/nZ (for multiprecision n)
 
-From the packaging point of view the main change will be configuring BLAS. 
+From the packaging point of view the main change will be configuring BLAS.
+
+- upstream e-antic issue https://github.com/flatsurf/e-antic/issues/154

[antonio-rojas]

comment:8

sagelib itself builds fine with flint 2.7 and passes doctests, modulo the singular upgrade.

[kedlaya]

comment:10

For the record, we are now up to Flint 2.7.1. As the timing and numbering suggest, this is mainly a bugfix release.

[thierry-FreeBSD]

comment:11

e-antic has been fixed (in head, to be 1.0.0).

[slel]

Description changed:

--- 
+++ 
@@ -1,8 +1,8 @@
-This is to upgrade to Flint 2.7.0.
+This is to upgrade to Flint 2.7.1.
 
 Our last upgrade was to Flint 2.6.3 in #29719.
 
-Changes planned in 2.7.0 (from NEWS file)
+Changes in FLINT 2.7.0 (from NEWS file)
 
 2.7.0 -- 11 Dec 2020
 
@@ -18,4 +18,7 @@
 
 From the packaging point of view the main change will be configuring BLAS.
 
+Related:
+
 - upstream e-antic issue https://github.com/flatsurf/e-antic/issues/154
+- #31408: Meta-ticket: Use new features from FLINT 2.x