[bug#35598] [PATCH 0/6] Add Mesa agent based modeling platform

[bug#35598] [PATCH 0/6] Add Mesa agent based modeling platform

[Calvin Pritchard]

This patch series is to add the python agent based modeling platform 
Mesa. It is in Python 3 only. I've added Python 2 versions for poyo and
whichcraft since they worked without modification. The `arrow` package
depends on https://github.com/jaraco/backports.functools_lru_cache for
Python 2. I could add that package as a conditional dependency but I'm
not sure how.

Calvin Pritchard (6):
  gnu: Add python-arrow
  gnu: Add python-whichcraft, python2-whichcraft
  gnu: Add python-poyo, python2-poyo
  gnu: Add python-jinja2-time
  gnu: Add python-cookiecutter
  gnu: Add python-mesa

 gnu/packages/python-xyz.scm | 163 ++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)

-- 
2.17.1

[bug#35598] [PATCH 1/6] gnu: Add python-arrow

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-arrow). New variables.
---
 gnu/packages/python-xyz.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index b0d2b105ca..bdc6f408f0 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2150,6 +2150,36 @@ JavaScript-like message boxes.  Types of dialog boxes include:
 ")
     (license license:bsd-3)))
 
+(define-public python-arrow
+  (package
+    (name "python-arrow")
+    (version "0.13.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "arrow" version))
+       (sha256
+        (base32
+         "12hbnrfwa4r9n7zpbpfvah6dh8blzb3w5f4zmhgq3dy02vqdjm3g"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-chai" ,python-chai)
+       ("python-pytz" ,python-pytz)
+       ("python-simplejson" ,python-simplejson)))
+    (propagated-inputs
+     `(("python-dateutil" ,python-dateutil)))
+    (home-page
+     "https://github.com/crsmithdev/arrow/")
+    (synopsis "Better dates and times for Python")
+    (description "Arrow is a Python library that offers a sensible,
+human-friendly approach to creating, manipulating, formatting and
+converting dates, times, and timestamps.  It implements and updates
+the datetime type, plugging gaps in functionality, and provides an
+intelligent module API that supports many common creation scenarios.
+Simply put, it helps you work with dates and times with fewer imports
+and a lot less code.")
+    (license license:asl2.0)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 2/6] gnu: Add python-whichcraft, python2-whichcraft

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-whichcraft, python2-whichcraft).
  New variables.
---
 gnu/packages/python-xyz.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index bdc6f408f0..4cee74591d 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2180,6 +2180,31 @@ Simply put, it helps you work with dates and times with fewer imports
 and a lot less code.")
     (license license:asl2.0)))
 
+(define-public python-whichcraft
+  (package
+    (name "python-whichcraft")
+    (version "0.5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "whichcraft" version))
+       (sha256
+        (base32
+         "058qr17inlhp9354q1lr0qq31yhqzfd405djp1fzqzr33x9xvkgy"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
+    (home-page
+     "https://github.com/pydanny/whichcraft")
+    (synopsis
+     "Provides cross-platform cross-python shutil.which")
+    (description
+     "This package provides cross-platform cross-python shutil.which functionality.")
+    (license license:bsd-3)))
+
+(define-public python2-whichcraft
+  (package-with-python2 python-whichcraft))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 3/6] gnu: Add python-poyo, python2-poyo

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-poyo, python2-poyo).
  New variables.
---
 gnu/packages/python-xyz.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 4cee74591d..815e190d5f 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2205,6 +2205,29 @@ and a lot less code.")
 (define-public python2-whichcraft
   (package-with-python2 python-whichcraft))
 
+(define-public python-poyo
+  (package
+    (name "python-poyo")
+    (version "0.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "poyo" version))
+       (sha256
+        (base32
+         "07fdxlqgnnzb8r6lasvdfjcbd8sb9af0wla08rbfs40j349m8jn3"))))
+    (build-system python-build-system)
+    (home-page "https://github.com/hackebrot/poyo")
+    (synopsis "YAML Parser for Python")
+    (description
+     "A YAML Parser for Python.
+
+It can read a subset of yaml and is not capable of write yaml")
+    (license license:expat)))
+
+(define-public python2-poyo
+  (package-with-python2 python-poyo))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 4/6] gnu: Add python-jinja2-time

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-jinja2-time). New variables.
---
 gnu/packages/python-xyz.scm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 815e190d5f..3407803ca6 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2228,6 +2228,28 @@ It can read a subset of yaml and is not capable of write yaml")
 (define-public python2-poyo
   (package-with-python2 python-poyo))
 
+(define-public python-jinja2-time
+  (package
+    (name "python-jinja2-time")
+    (version "0.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "jinja2-time" version))
+       (sha256
+        (base32
+         "0h0dr7cfpjnjj8bgl2vk9063a53649pn37wnlkd8hxjy656slkni"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-arrow" ,python-arrow)
+       ("python-jinja2" ,python-jinja2)))
+    (home-page
+     "https://github.com/hackebrot/jinja2-time")
+    (synopsis "Jinja2 Extension for Dates and Times")
+    (description
+     "Jinja2 Extension for Dates and Times")
+    (license license:expat)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 5/6] gnu: Add python-cookiecutter

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-cookiecutter). New variables.
---
 gnu/packages/python-xyz.scm | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 3407803ca6..a801376c6d 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2250,6 +2250,39 @@ It can read a subset of yaml and is not capable of write yaml")
      "Jinja2 Extension for Dates and Times")
     (license license:expat)))
 
+(define-public python-cookiecutter
+  (package
+    (name "python-cookiecutter")
+    (version "1.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "cookiecutter" version))
+       (sha256
+        (base32
+         "0glsvaz8igi2wy1hsnhm9fkn6560vdvdixzvkq6dn20z3hpaa5hk"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-freezegun" ,python-freezegun)
+       ("python-pytest" ,python-pytest)))
+    (propagated-inputs
+     `(("python-binaryornot" ,python-binaryornot)
+       ("python-click" ,python-click)
+       ("python-future" ,python-future)
+       ("python-jinja2" ,python-jinja2)
+       ("python-jinja2-time" ,python-jinja2-time)
+       ("python-poyo" ,python-poyo)
+       ("python-requests" ,python-requests)
+       ("python-whichcraft" ,python-whichcraft)))
+    (home-page
+     "https://github.com/audreyr/cookiecutter")
+    (synopsis
+     "Command-line utility to create projects from templates")
+    (description
+     "A command-line utility that creates projects from project templates,
+e.g. creating a Python package project from a Python package project template.")
+    (license license:bsd-3)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 6/6] gnu: Add python-mesa

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-mesa). New variables.
---
 gnu/packages/python-xyz.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index a801376c6d..5eddf9cc2c 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2283,6 +2283,36 @@ It can read a subset of yaml and is not capable of write yaml")
 e.g. creating a Python package project from a Python package project template.")
     (license license:bsd-3)))
 
+(define-public python-mesa
+  (package
+    (name "python-mesa")
+    (version "0.8.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "Mesa" version))
+       (sha256
+        (base32
+         "0qn7gsv1ni5ccm6r6k02m94m4n6sy791yqk0h90x2ym09asvpf2b"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-click" ,python-click)
+       ("python-cookiecutter" ,python-cookiecutter)
+       ("jupyter" ,jupyter)
+       ("python-networkx" ,python-networkx)
+       ("python-numpy" ,python-numpy)
+       ("python-pandas" ,python-pandas)
+       ("python-tornado" ,python-tornado)
+       ("python-tqdm" ,python-tqdm)))
+    (home-page "https://github.com/projectmesa/mesa")
+    (synopsis
+     "Agent-based modeling (ABM) in Python 3+")
+    (description
+     "Mesa is an agent-based modeling framework in Python.  It contains core
+components to implement spatial models, schedule agents and visualize model
+runs")
+    (license license:asl2.0)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 1/6] gnu: Add python-arrow

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-arrow). New variables.
---
 gnu/packages/python-xyz.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index b0d2b105ca..bdc6f408f0 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2150,6 +2150,36 @@ JavaScript-like message boxes.  Types of dialog boxes include:
 ")
     (license license:bsd-3)))
 
+(define-public python-arrow
+  (package
+    (name "python-arrow")
+    (version "0.13.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "arrow" version))
+       (sha256
+        (base32
+         "12hbnrfwa4r9n7zpbpfvah6dh8blzb3w5f4zmhgq3dy02vqdjm3g"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-chai" ,python-chai)
+       ("python-pytz" ,python-pytz)
+       ("python-simplejson" ,python-simplejson)))
+    (propagated-inputs
+     `(("python-dateutil" ,python-dateutil)))
+    (home-page
+     "https://github.com/crsmithdev/arrow/")
+    (synopsis "Better dates and times for Python")
+    (description "Arrow is a Python library that offers a sensible,
+human-friendly approach to creating, manipulating, formatting and
+converting dates, times, and timestamps.  It implements and updates
+the datetime type, plugging gaps in functionality, and provides an
+intelligent module API that supports many common creation scenarios.
+Simply put, it helps you work with dates and times with fewer imports
+and a lot less code.")
+    (license license:asl2.0)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 2/6] gnu: Add python-whichcraft, python2-whichcraft

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-whichcraft, python2-whichcraft).
  New variables.
---
 gnu/packages/python-xyz.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index bdc6f408f0..4cee74591d 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2180,6 +2180,31 @@ Simply put, it helps you work with dates and times with fewer imports
 and a lot less code.")
     (license license:asl2.0)))
 
+(define-public python-whichcraft
+  (package
+    (name "python-whichcraft")
+    (version "0.5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "whichcraft" version))
+       (sha256
+        (base32
+         "058qr17inlhp9354q1lr0qq31yhqzfd405djp1fzqzr33x9xvkgy"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
+    (home-page
+     "https://github.com/pydanny/whichcraft")
+    (synopsis
+     "Provides cross-platform cross-python shutil.which")
+    (description
+     "This package provides cross-platform cross-python shutil.which functionality.")
+    (license license:bsd-3)))
+
+(define-public python2-whichcraft
+  (package-with-python2 python-whichcraft))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 3/6] gnu: Add python-poyo, python2-poyo

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-poyo, python2-poyo).
  New variables.
---
 gnu/packages/python-xyz.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 4cee74591d..815e190d5f 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2205,6 +2205,29 @@ and a lot less code.")
 (define-public python2-whichcraft
   (package-with-python2 python-whichcraft))
 
+(define-public python-poyo
+  (package
+    (name "python-poyo")
+    (version "0.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "poyo" version))
+       (sha256
+        (base32
+         "07fdxlqgnnzb8r6lasvdfjcbd8sb9af0wla08rbfs40j349m8jn3"))))
+    (build-system python-build-system)
+    (home-page "https://github.com/hackebrot/poyo")
+    (synopsis "YAML Parser for Python")
+    (description
+     "A YAML Parser for Python.
+
+It can read a subset of yaml and is not capable of write yaml")
+    (license license:expat)))
+
+(define-public python2-poyo
+  (package-with-python2 python-poyo))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 4/6] gnu: Add python-jinja2-time

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-jinja2-time). New variables.
---
 gnu/packages/python-xyz.scm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 815e190d5f..3407803ca6 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2228,6 +2228,28 @@ It can read a subset of yaml and is not capable of write yaml")
 (define-public python2-poyo
   (package-with-python2 python-poyo))
 
+(define-public python-jinja2-time
+  (package
+    (name "python-jinja2-time")
+    (version "0.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "jinja2-time" version))
+       (sha256
+        (base32
+         "0h0dr7cfpjnjj8bgl2vk9063a53649pn37wnlkd8hxjy656slkni"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-arrow" ,python-arrow)
+       ("python-jinja2" ,python-jinja2)))
+    (home-page
+     "https://github.com/hackebrot/jinja2-time")
+    (synopsis "Jinja2 Extension for Dates and Times")
+    (description
+     "Jinja2 Extension for Dates and Times")
+    (license license:expat)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 5/6] gnu: Add python-cookiecutter

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-cookiecutter). New variables.
---
 gnu/packages/python-xyz.scm | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 3407803ca6..a801376c6d 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2250,6 +2250,39 @@ It can read a subset of yaml and is not capable of write yaml")
      "Jinja2 Extension for Dates and Times")
     (license license:expat)))
 
+(define-public python-cookiecutter
+  (package
+    (name "python-cookiecutter")
+    (version "1.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "cookiecutter" version))
+       (sha256
+        (base32
+         "0glsvaz8igi2wy1hsnhm9fkn6560vdvdixzvkq6dn20z3hpaa5hk"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-freezegun" ,python-freezegun)
+       ("python-pytest" ,python-pytest)))
+    (propagated-inputs
+     `(("python-binaryornot" ,python-binaryornot)
+       ("python-click" ,python-click)
+       ("python-future" ,python-future)
+       ("python-jinja2" ,python-jinja2)
+       ("python-jinja2-time" ,python-jinja2-time)
+       ("python-poyo" ,python-poyo)
+       ("python-requests" ,python-requests)
+       ("python-whichcraft" ,python-whichcraft)))
+    (home-page
+     "https://github.com/audreyr/cookiecutter")
+    (synopsis
+     "Command-line utility to create projects from templates")
+    (description
+     "A command-line utility that creates projects from project templates,
+e.g. creating a Python package project from a Python package project template.")
+    (license license:bsd-3)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 6/6] gnu: Add python-mesa

[Calvin Pritchard]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-mesa). New variables.
---
 gnu/packages/python-xyz.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index a801376c6d..5eddf9cc2c 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2283,6 +2283,36 @@ It can read a subset of yaml and is not capable of write yaml")
 e.g. creating a Python package project from a Python package project template.")
     (license license:bsd-3)))
 
+(define-public python-mesa
+  (package
+    (name "python-mesa")
+    (version "0.8.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "Mesa" version))
+       (sha256
+        (base32
+         "0qn7gsv1ni5ccm6r6k02m94m4n6sy791yqk0h90x2ym09asvpf2b"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-click" ,python-click)
+       ("python-cookiecutter" ,python-cookiecutter)
+       ("jupyter" ,jupyter)
+       ("python-networkx" ,python-networkx)
+       ("python-numpy" ,python-numpy)
+       ("python-pandas" ,python-pandas)
+       ("python-tornado" ,python-tornado)
+       ("python-tqdm" ,python-tqdm)))
+    (home-page "https://github.com/projectmesa/mesa")
+    (synopsis
+     "Agent-based modeling (ABM) in Python 3+")
+    (description
+     "Mesa is an agent-based modeling framework in Python.  It contains core
+components to implement spatial models, schedule agents and visualize model
+runs")
+    (license license:asl2.0)))
+
 (define-public python-pympler
   (package
     (name "python-pympler")
-- 
2.17.1

[bug#35598] [PATCH 0/6] Add Mesa agent based modeling platform

[Ludovic Courtès]

Hi Calvin,

Thanks for the patches!

Calvin Pritchard <pritchard.calvin@gmail.com> skribis:

> This patch series is to add the python agent based modeling platform 
> Mesa. It is in Python 3 only. I've added Python 2 versions for poyo and
> whichcraft since they worked without modification. The `arrow` package
> depends on https://github.com/jaraco/backports.functools_lru_cache for
> Python 2. I could add that package as a conditional dependency but I'm
> not sure how.

Actually, I would invite you to not provide the Python 2.x variants of
these packages: we’re still providing packages for 2.x, but slowly
reducing their number.

Apart from that, the patches LGTM, except for a couple of synopses and
descriptions that could be improved a bit, to at least make full
sentences etc.  See
<https://www.gnu.org/software/guix/manual/en/html_node/Synopses-and-Descriptions.html>.

Could you take a look and send updated patches?

Thank you!

Ludo’.

[bug#35598] [PATCH v2] gnu: Add python-mesa.

[jlicht]

From: Calvin Pritchard <calvin.pritchard@asu.edu>

* gnu/packages/python-xyz.scm (python-mesa). New variable.

Co-authored-by: Jelle Licht <jlicht@fsfe.net>

---

Changes in v2:
- Drop all dependency patches, as those packages now exist
- Use pyproject-build-system
- Reworked to modern packaging standards
- Update mesage package version to 1.2.1.

 gnu/packages/python-xyz.scm | 63 +++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index f7e3f6f538..be89df2fa1 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -2305,6 +2305,69 @@ (define-public python-license-expression
 conventions and aliases in the same expression.")
     (license license:gpl2+)))
 
+(define-public python-mesa
+  (package
+    (name "python-mesa")
+    (version "1.2.1")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "Mesa" version))
+              (sha256
+               (base32
+                "01504d2bgfwsg92942k34fi7adq5n9r1fw4sn5kx0sm70jwq1628"))))
+    (build-system pyproject-build-system)
+    (arguments
+     (list
+      #:modules '((guix build pyproject-build-system)
+                  (guix build utils)
+                  (ice-9 match)
+                  (srfi srfi-1))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'patch-cookiecutter
+            (lambda* (#:key inputs #:allow-other-keys)
+              (substitute* "mesa/main.py"
+                (("\"cookiecutter\"")
+                 (string-append "\""
+                                (search-input-file inputs "/bin/cookiecutter")
+                                "\"")))))
+          (add-after 'build 'set-HOME
+            ;;  Some tests write to $HOME.
+            (lambda _ (setenv "HOME" "/tmp")))
+          (replace 'compile-bytecode
+            (lambda* (#:key inputs outputs #:allow-other-keys)
+              (let* ((site-dir (site-packages inputs outputs))
+                     (python (assoc-ref inputs "python"))
+                     (major-minor (map string->number
+                                       (take (string-split (python-version python)
+                                                           #\.)
+                                             2)))
+                     (<3.7? (match major-minor
+                              ((major minor)
+                               (or (< major 3)
+                                   (and (= major 3)
+                                        (< minor 7)))))))
+                (unless <3.7?
+                  ;; The cookiecutter-mesa directory contains project templates that
+                  ;; should not be compiled.
+                  (invoke "python" "-m" "compileall"
+                          "-x" "cookiecutter-mesa"
+                          "--invalidation-mode=unchecked-hash" site-dir))))))))
+    (propagated-inputs (list python-click
+                             python-networkx
+                             python-numpy
+                             python-pandas
+                             python-tornado
+                             python-tqdm))
+    (inputs (list python-cookiecutter))
+    (native-inputs (list python-coverage python-pytest python-pytest-cov))
+    (home-page "https://github.com/projectmesa/mesa")
+    (synopsis "Agent-based modeling (ABM) in Python")
+    (description "Mesa is an agent-based modeling framework in Python.  It contains
+core components to implement spatial models, schedule agents and visualize model
+runs.")
+    (license license:asl2.0)))
+
 (define-public python-wand
   (package
     (name "python-wand")

base-commit: 9845e408e533f5834a13f294ca1ddc1dc7e248fd
-- 
2.40.1