19 files changed, 601 insertions, 0 deletions
diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 0000000..871ca5a
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,22 @@
+ripser (1.1.20200206.286d36-3) unstable; urgency=medium
+
+  * Add upstream/metadafile file.
+  * Standards-version 4.5.1. No changes needed.
+  * DH compat 13.
+  * Move git to Salsa.
+
+ -- Gard Spreemann <gspr@nonempty.org>  Sat, 23 Jan 2021 18:37:46 +0100
+
+ripser (1.1.20200206.286d36-2) unstable; urgency=medium
+
+  * Add patch to prevent overflow on 32 bit architectures.
+  * Standards-version 4.5.0. No changes needed.
+  * Add tests.
+
+ -- Gard Spreemann <gspr@nonempty.org>  Mon, 09 Mar 2020 11:16:50 +0100
+
+ripser (1.1.20200206.286d36-1) unstable; urgency=medium
+
+  * Initial release. (Closes: #943817)
+
+ -- Gard Spreemann <gspr@nonempty.org>  Thu, 06 Feb 2020 11:16:53 +0100
diff --git a/debian/control b/debian/control
new file mode 100644
index 0000000..9333691
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,21 @@
+Source: ripser
+Section: math
+Priority: optional
+Maintainer: Gard Spreemann <gspr@nonempty.org>
+Build-Depends:
+ debhelper-compat (= 13)
+Standards-Version: 4.5.1
+Rules-Requires-Root: no
+Homepage: http://ripser.org
+Vcs-Browser: https://salsa.debian.org/gspr/ripser
+Vcs-Git: https://salsa.debian.org/gspr/ripser.git -b debian/sid
+
+Package: ripser
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: Fast computation of persistent homology of flag complexes
+ Ripser computes persistent homology of flag complexes (such as
+ Vietoris-Rips complexes) only, allowing significant gains in
+ computation time and memory usage over the general situation.
+ .
+ See https://arxiv.org/abs/1908.02518.
diff --git a/debian/copyright b/debian/copyright
new file mode 100644
index 0000000..6a73fe7
--- /dev/null
+++ b/debian/copyright
@@ -0,0 +1,33 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: ripser
+Source: http://ripser.org
+License: MIT
+
+Files: *
+Copyright: 2015-2021 Ulrich Bauer
+License: MIT
+
+Files: debian/*
+Copyright: 2020-2021 Gard Spreemann <gspr@nonempty.org>
+License: MIT
+
+License: MIT
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+ .
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+ .
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
diff --git a/debian/patches/0001-Prevent-overflow-on-32-bit-architectures.patch b/debian/patches/0001-Prevent-overflow-on-32-bit-architectures.patch
new file mode 100644
index 0000000..01142f6
--- /dev/null
+++ b/debian/patches/0001-Prevent-overflow-on-32-bit-architectures.patch
@@ -0,0 +1,21 @@
+From: Gard Spreemann <gspr@nonempty.org>
+Date: Sun, 8 Mar 2020 15:14:54 +0100
+Subject: Prevent overflow on 32 bit architectures.
+
+---
+ ripser.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/ripser.cpp b/ripser.cpp
+index cd546e8..79e5c89 100644
+--- a/ripser.cpp
++++ b/ripser.cpp
+@@ -80,7 +80,7 @@ static const std::string clear_line("\r\033[K");
+ static const size_t num_coefficient_bits = 8;
+ 
+ static const index_t max_simplex_index =
+-    (1l << (8 * sizeof(index_t) - 1 - num_coefficient_bits)) - 1;
++  ((index_t)1 << (8 * sizeof(index_t) - 1 - num_coefficient_bits)) - 1;
+ 
+ void check_overflow(index_t i) {
+ 	if
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 0000000..99f050b
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1 @@
+0001-Prevent-overflow-on-32-bit-architectures.patch
diff --git a/debian/ripser-coeff.1 b/debian/ripser-coeff.1
new file mode 100644
index 0000000..3d94831
--- /dev/null
+++ b/debian/ripser-coeff.1
@@ -0,0 +1,42 @@
+.TH RIPSER-COEFF 1
+.SH NAME
+ripser-coeff \- fast computation of persistent homology of flag complexes
+.SH SYNOPSIS
+.B ripser-coeff
+[\fB\-\-help\fR]
+[\fB\-\-format\fR \fIformat\fR]
+[\fB\-\-dim \fIk\fR]
+[\fB\-\-threshold \fIt\fR]
+[\fB\-\-ratio \fIr\fR]
+[\fB\-\-modulus \fIp\fR]
+[\fIfilename\fR]
+.SH DESCRIPTION
+.B ripser-coeff
+computes persistent homology of flag complexes (such as Vietoris-Rips
+complexes) only, allowing significant gains in computation time and
+memory usage over the general situation. Unlike \fBripser\fR, it
+computes over an arbitrary finite field.
+
+See https://arxiv.org/abs/1908.02518 for details.
+.SH OPTIONS
+.TP
+\fB\-\-help\fR
+Display help.
+.TP
+\fB\-\-format\fR \fIformat\fR
+Specify input format. See \fB\-\-help\fR for a full list.
+.TP
+\fB\-\-dim \fIk\fR
+Compute persistent homology up to dimension \fIk\fR.
+.TP
+\fB\-\-threshold \fIt\fR
+Compute Rips complexes up to diameter \fIt\fR.
+.TP
+\fB\-\-ratio \fIr\fR
+Only show persistence pairs with death/birth ratio > \fIr\fR.
+.TP
+\fB\-\-modulus \fIp\fR
+Compute homology with coefficients in the prime field Z/\fIp\fRZ.
+.TP
+\fIfilename\fR
+Read input from this file. Uses stdin if not present.
diff --git a/debian/ripser.1 b/debian/ripser.1
new file mode 100644
index 0000000..9caafee
--- /dev/null
+++ b/debian/ripser.1
@@ -0,0 +1,37 @@
+.TH RIPSER 1
+.SH NAME
+ripser \- fast computation of persistent homology of flag complexes
+.SH SYNOPSIS
+.B ripser
+[\fB\-\-help\fR]
+[\fB\-\-format\fR \fIformat\fR]
+[\fB\-\-dim \fIk\fR]
+[\fB\-\-threshold \fIt\fR]
+[\fB\-\-ratio \fIr\fR]
+[\fIfilename\fR]
+.SH DESCRIPTION
+.B ripser
+computes persistent homology of flag complexes (such as Vietoris-Rips
+complexes) only, allowing significant gains in computation time and
+memory usage over the general situation.
+
+See https://arxiv.org/abs/1908.02518 for details.
+.SH OPTIONS
+.TP
+\fB\-\-help\fR
+Display help.
+.TP
+\fB\-\-format\fR \fIformat\fR
+Specify input format. See \fB\-\-help\fR for a full list.
+.TP
+\fB\-\-dim \fIk\fR
+Compute persistent homology up to dimension \fIk\fR.
+.TP
+\fB\-\-threshold \fIt\fR
+Compute Rips complexes up to diameter \fIt\fR.
+.TP
+\fB\-\-ratio \fIr\fR
+Only show persistence pairs with death/birth ratio > \fIr\fR.
+.TP
+\fIfilename\fR
+Read input from this file. Uses stdin if not present.
diff --git a/debian/ripser.install b/debian/ripser.install
new file mode 100644
index 0000000..8dd1c67
--- /dev/null
+++ b/debian/ripser.install
@@ -0,0 +1 @@
+build/* usr/bin/
diff --git a/debian/ripser.manpages b/debian/ripser.manpages
new file mode 100644
index 0000000..6c82f0f
--- /dev/null
+++ b/debian/ripser.manpages
@@ -0,0 +1,2 @@
+debian/ripser.1
+debian/ripser-coeff.1
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 0000000..f7ab00f
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,19 @@
+#!/usr/bin/make -f
+
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+CPPFLAGS:=$(shell dpkg-buildflags --get CPPFLAGS)
+CXXFLAGS:=$(shell dpkg-buildflags --get CXXFLAGS)
+LDFLAGS:=$(shell dpkg-buildflags --get LDFLAGS)
+
+%:
+	dh $@
+
+override_dh_auto_configure:
+	mkdir -p build
+
+override_dh_auto_build:
+	c++ $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) -o build/ripser ripser.cpp
+	c++ $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) -DUSE_COEFFICIENTS -o build/ripser-coeff ripser.cpp
+
+override_dh_auto_clean:
+	rm -rf build
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)
diff --git a/debian/tests/control b/debian/tests/control
new file mode 100644
index 0000000..a948b2f
--- /dev/null
+++ b/debian/tests/control
@@ -0,0 +1,2 @@
+Tests: examples.py
+Depends: python3, python3-numpy, ripser
diff --git a/debian/tests/examples.py b/debian/tests/examples.py
new file mode 100755
index 0000000..a5a4836
--- /dev/null
+++ b/debian/tests/examples.py
@@ -0,0 +1,76 @@
+#!/usr/bin/python3
+
+import numpy as np
+import subprocess
+
+def parse_output(s):
+    ret = []
+    current_dim = None
+    for line in s.splitlines():
+        if line.startswith("persistence intervals in dim"):
+            splitline = line.rstrip().rstrip(":").split(" ")
+            assert(len(splitline) == 5)
+            current_dim = int(splitline[-1])
+            while len(ret) < current_dim + 1:
+                ret.append(([], []))
+        elif line.startswith(" ["):
+            splitline = line.lstrip(" [").rstrip().rstrip(")").split(",")
+            assert(len(splitline) == 2)
+            if splitline[1].strip() == "":
+                ret[current_dim][1].append(float(splitline[0]))
+            else:
+                ret[current_dim][0].append((float(splitline[0]), float(splitline[1])))
+
+    return ret
+
+def main():
+    tests = [(None, "lower-distance", 2, "sphere_3_192.lower_distance_matrix"),
+             (None, "distance", 2, "projective_plane.csv"),
+             (None, "dipha", 2, "projective_plane.dipha"),
+             (None, "lower-distance", 2, "projective_plane.lower_distance_matrix"),
+             (2, "lower-distance", 2, "sphere_3_192.lower_distance_matrix"),
+             (2, "distance", 2, "projective_plane.csv"),
+             (2, "dipha", 2, "projective_plane.dipha"),
+             (2, "lower-distance", 2, "projective_plane.lower_distance_matrix")]
+             
+    for (coeff, format, dim, prefix) in tests:
+        if coeff is None:
+            print("Running test %s." %(prefix))
+            proc = subprocess.Popen(["/usr/bin/ripser", "--dim", str(dim), "--format", format, "examples/%s" %(prefix)], stdout=subprocess.PIPE)
+        else:
+            print("Running test %s with coefficients in Z/%dZ." %(prefix, coeff))
+            proc = subprocess.Popen(["/usr/bin/ripser-coeff", "--modulus", str(coeff), "--dim", str(dim), "--format", format, "examples/%s" %(prefix)], stdout=subprocess.PIPE)
+            
+        output = proc.communicate()[0].decode("utf-8")
+        assert(proc.returncode == 0)
+        pd = parse_output(output)
+
+        with open("debian/tests/reference/%s.txt" %(prefix), "r") as f:
+            pd_ref = parse_output(f.read())
+
+        assert(len(pd) == len(pd_ref))
+
+        for d in range(0, len(pd)):
+            fin = np.array(sorted(pd[d][0]))
+            inf = np.array(sorted(pd[d][1]))
+            print("Finite bars in dimension %d:" %(d))
+            print(fin)
+            print("Infinite bars in dimension %d:" %(d))
+            print(inf)
+            
+            fin_ref = np.array(sorted(pd_ref[d][0]))
+            inf_ref = np.array(sorted(pd_ref[d][1]))
+
+            assert(fin.shape == fin_ref.shape)
+            assert(inf.shape == inf_ref.shape)
+
+            np.testing.assert_allclose(fin, fin_ref)
+            np.testing.assert_allclose(inf, inf_ref)
+
+            print("------")
+
+        print("-------------------------------------------------")
+        
+
+if __name__ == "__main__":
+    main()
diff --git a/debian/tests/reference/projective_plane.csv.txt b/debian/tests/reference/projective_plane.csv.txt
new file mode 100644
index 0000000..c135026
--- /dev/null
+++ b/debian/tests/reference/projective_plane.csv.txt
@@ -0,0 +1,20 @@
+value range: [1,2]
+distance matrix with 13 points
+persistence intervals in dim 0:
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0, )
+persistence intervals in dim 1:
+ [1,2)
+persistence intervals in dim 2:
+ [1,2)
diff --git a/debian/tests/reference/projective_plane.dipha.txt b/debian/tests/reference/projective_plane.dipha.txt
new file mode 100644
index 0000000..c135026
--- /dev/null
+++ b/debian/tests/reference/projective_plane.dipha.txt
@@ -0,0 +1,20 @@
+value range: [1,2]
+distance matrix with 13 points
+persistence intervals in dim 0:
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0, )
+persistence intervals in dim 1:
+ [1,2)
+persistence intervals in dim 2:
+ [1,2)
diff --git a/debian/tests/reference/projective_plane.lower_distance_matrix.txt b/debian/tests/reference/projective_plane.lower_distance_matrix.txt
new file mode 100644
index 0000000..c135026
--- /dev/null
+++ b/debian/tests/reference/projective_plane.lower_distance_matrix.txt
@@ -0,0 +1,20 @@
+value range: [1,2]
+distance matrix with 13 points
+persistence intervals in dim 0:
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0,1)
+ [0, )
+persistence intervals in dim 1:
+ [1,2)
+persistence intervals in dim 2:
+ [1,2)
diff --git a/debian/tests/reference/sphere_3_192.lower_distance_matrix.txt b/debian/tests/reference/sphere_3_192.lower_distance_matrix.txt
new file mode 100644
index 0000000..71f9b72
--- /dev/null
+++ b/debian/tests/reference/sphere_3_192.lower_distance_matrix.txt
@@ -0,0 +1,251 @@
+value range: [0.00367531,2]
+sparse distance matrix with 192 points and 17857/18431 entries
+persistence intervals in dim 0:
+ [0,0.00391946)
+ [0,0.00367531)
+ [0,0.0120098)
+ [0,0.0173134)
+ [0,0.0217315)
+ [0,0.0311057)
+ [0,0.037954)
+ [0,0.0387451)
+ [0,0.0433426)
+ [0,0.0471186)
+ [0,0.0487061)
+ [0,0.048826)
+ [0,0.0496187)
+ [0,0.0515157)
+ [0,0.0522132)
+ [0,0.0559886)
+ [0,0.0560443)
+ [0,0.057488)
+ [0,0.0593071)
+ [0,0.0623736)
+ [0,0.0633425)
+ [0,0.0637053)
+ [0,0.0651112)
+ [0,0.0672609)
+ [0,0.0692368)
+ [0,0.0702075)
+ [0,0.0714516)
+ [0,0.0728647)
+ [0,0.0741239)
+ [0,0.0743236)
+ [0,0.0746054)
+ [0,0.0753955)
+ [0,0.076909)
+ [0,0.0782455)
+ [0,0.0792212)
+ [0,0.0800348)
+ [0,0.0802451)
+ [0,0.0814685)
+ [0,0.0831358)
+ [0,0.0831521)
+ [0,0.084341)
+ [0,0.0857401)
+ [0,0.0870489)
+ [0,0.0884133)
+ [0,0.0959033)
+ [0,0.0970981)
+ [0,0.0988752)
+ [0,0.0994522)
+ [0,0.108768)
+ [0,0.109526)
+ [0,0.111131)
+ [0,0.111798)
+ [0,0.115939)
+ [0,0.119187)
+ [0,0.121955)
+ [0,0.122089)
+ [0,0.123527)
+ [0,0.124774)
+ [0,0.126595)
+ [0,0.127383)
+ [0,0.127864)
+ [0,0.129741)
+ [0,0.131438)
+ [0,0.131638)
+ [0,0.133033)
+ [0,0.133525)
+ [0,0.133722)
+ [0,0.134886)
+ [0,0.135402)
+ [0,0.138674)
+ [0,0.141823)
+ [0,0.142152)
+ [0,0.142537)
+ [0,0.142834)
+ [0,0.143085)
+ [0,0.143151)
+ [0,0.145018)
+ [0,0.145725)
+ [0,0.147203)
+ [0,0.147289)
+ [0,0.147427)
+ [0,0.148506)
+ [0,0.149017)
+ [0,0.149226)
+ [0,0.150747)
+ [0,0.151643)
+ [0,0.15244)
+ [0,0.154095)
+ [0,0.15587)
+ [0,0.1569)
+ [0,0.157251)
+ [0,0.157293)
+ [0,0.157373)
+ [0,0.158413)
+ [0,0.159282)
+ [0,0.162464)
+ [0,0.164809)
+ [0,0.164815)
+ [0,0.165202)
+ [0,0.165314)
+ [0,0.165494)
+ [0,0.165592)
+ [0,0.165907)
+ [0,0.167455)
+ [0,0.168587)
+ [0,0.173412)
+ [0,0.173586)
+ [0,0.173684)
+ [0,0.174172)
+ [0,0.17493)
+ [0,0.175016)
+ [0,0.176306)
+ [0,0.179609)
+ [0,0.18428)
+ [0,0.184757)
+ [0,0.189106)
+ [0,0.190642)
+ [0,0.191661)
+ [0,0.192356)
+ [0,0.192406)
+ [0,0.192733)
+ [0,0.193791)
+ [0,0.193804)
+ [0,0.195722)
+ [0,0.197377)
+ [0,0.199673)
+ [0,0.201961)
+ [0,0.202564)
+ [0,0.203812)
+ [0,0.204208)
+ [0,0.204544)
+ [0,0.205389)
+ [0,0.207016)
+ [0,0.207261)
+ [0,0.207714)
+ [0,0.208063)
+ [0,0.208851)
+ [0,0.210372)
+ [0,0.214018)
+ [0,0.215759)
+ [0,0.218526)
+ [0,0.218561)
+ [0,0.223232)
+ [0,0.227524)
+ [0,0.227933)
+ [0,0.2286)
+ [0,0.228917)
+ [0,0.231179)
+ [0,0.231675)
+ [0,0.234112)
+ [0,0.234969)
+ [0,0.237571)
+ [0,0.23879)
+ [0,0.240632)
+ [0,0.24348)
+ [0,0.24509)
+ [0,0.246491)
+ [0,0.247042)
+ [0,0.248879)
+ [0,0.249339)
+ [0,0.249345)
+ [0,0.253163)
+ [0,0.253227)
+ [0,0.25725)
+ [0,0.257997)
+ [0,0.264334)
+ [0,0.264483)
+ [0,0.266592)
+ [0,0.266635)
+ [0,0.268806)
+ [0,0.270996)
+ [0,0.274611)
+ [0,0.276431)
+ [0,0.277191)
+ [0,0.277582)
+ [0,0.280629)
+ [0,0.282169)
+ [0,0.283562)
+ [0,0.283881)
+ [0,0.285416)
+ [0,0.287316)
+ [0,0.288591)
+ [0,0.289189)
+ [0,0.293466)
+ [0,0.297053)
+ [0,0.297933)
+ [0,0.304062)
+ [0,0.316023)
+ [0,0.319493)
+ [0,0.323964)
+ [0,0.332695)
+ [0, )
+persistence intervals in dim 1:
+ [0.542696,0.558863)
+ [0.531636,0.578093)
+ [0.530723,0.576869)
+ [0.463389,0.505345)
+ [0.445398,0.448892)
+ [0.443911,0.54761)
+ [0.431628,0.477277)
+ [0.413789,0.487379)
+ [0.412572,0.46308)
+ [0.411549,0.471715)
+ [0.409968,0.478461)
+ [0.386278,0.4922)
+ [0.381084,0.421374)
+ [0.377729,0.514046)
+ [0.377147,0.414788)
+ [0.377019,0.434385)
+ [0.374531,0.477153)
+ [0.370051,0.483155)
+ [0.361715,0.403181)
+ [0.354747,0.454956)
+ [0.352356,0.541947)
+ [0.350913,0.369543)
+ [0.35058,0.580726)
+ [0.347806,0.638039)
+ [0.347388,0.559978)
+ [0.344005,0.387193)
+ [0.34298,0.65758)
+ [0.339394,0.463666)
+ [0.33836,0.350411)
+ [0.33392,0.35111)
+ [0.33364,0.3797)
+ [0.331259,0.356381)
+ [0.329066,0.386148)
+ [0.324571,0.343083)
+ [0.324159,0.399094)
+ [0.322683,0.482958)
+ [0.318032,0.417462)
+ [0.317521,0.349622)
+ [0.316534,0.682559)
+ [0.309419,0.37151)
+ [0.309336,0.310216)
+ [0.308779,0.346297)
+ [0.304761,0.647803)
+ [0.301986,0.478334)
+ [0.301045,0.303943)
+ [0.29997,0.311993)
+ [0.298341,0.360737)
+ [0.279016,0.301331)
+ [0.2576,0.373749)
+ [0.253337,0.292286)
+ [0.24546,0.248903)
+ [0.240869,0.288747)
+ [0.189652,0.197515)
+persistence intervals in dim 2:
+ [0.720484,1.65562)
diff --git a/debian/upstream/metadata b/debian/upstream/metadata
new file mode 100644
index 0000000..f809cf4
--- /dev/null
+++ b/debian/upstream/metadata
@@ -0,0 +1,9 @@
+Bug-Database: https://github.com/Ripser/ripser/issues
+Bug-Submit: https://github.com/Ripser/ripser/issues/new
+Repository: https://github.com/Ripser/ripser.git
+Repository-Browse: https://github.com/Ripser/ripser
+Reference:
+  Title: "Ripser: efficient computation of Vietoris-Rips persistence barcodes"
+  Author: Ulrich Bauer
+  Eprint: 1908.02518
+  Year: 2019
diff --git a/debian/watch b/debian/watch
new file mode 100644
index 0000000..be95e49
--- /dev/null
+++ b/debian/watch
@@ -0,0 +1,3 @@
+version=4
+opts=filenamemangle=s/.+\/v?(\d\S+)\.tar\.gz/ripser-$1\.tar\.gz/,uversionmangle=s/-?(RC|rc)/~rc/ \
+  https://github.com/Ripser/ripser/releases .*/archive/v(\d\S+)\.tar\.gz
+\ No newline at end of file