GEERTS-reproduction: Add Guix 'channels.scm' and 'manifests.scm' files.

These two files are all it takes to set up a known-good test environment with:

    guix time-machine -C channels.scm -- shell -m manifest.scm

Author: zimoun

GEERTS-reproduction/README.md

@@ -32,8 +32,23 @@ These additional modifications were:
 
 ## Installation
 
-Install the project by cloning it on your computer or by downloading a compressed version.</br>
-Install the required packages using the environment.yml file and the 'conda env create -f environment.yml', followed by the 'conda activate geerts_reproduction' command.
+Using [GNU Guix](https://guix.gnu.org), set up the complete software
+environment with:
+
+```
+$ guix time-machine -C channels.scm         \
+       -- shell -m manifest.scm --container \
+       --expose=../images=$HOME/path/to/local/clone/images
+```
+
+The `channels.scm` file instructs how to [replicate the exact Guix revision
+used for
+testing](https://guix.gnu.org/manual/en/html_node/Replicating-Guix.html),
+while `manifest.scm` defines [the software
+environment](https://guix.gnu.org/manual/en/html_node/Writing-Manifests.html)
+of this computational experiment.
+
+Alternatively, if you are not using Guix, install the required packages using the environment.yml file and the 'conda env create -f environment.yml', followed by the 'conda activate geerts_reproduction' command.
 You can also install the required packages using the requirements.txt file and the 'pip install -r requirements.txt' command
 
 ## Usage

GEERTS-reproduction/channels.scm

@@ -0,0 +1,11 @@
+(list (channel
+        (name 'guix)
+        (url "https://git.savannah.gnu.org/git/guix.git")
+        (branch "master")
+        (commit
+          "14c03807ba4bc81d42cf869f5b827f7da54ff843")
+        (introduction
+          (make-channel-introduction
+            "9edb3f66fd807b096b48283debdcddccfea34bad"
+            (openpgp-fingerprint
+              "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))

GEERTS-reproduction/manifest.scm

@@ -0,0 +1,15 @@
+(specifications->manifest
+ (list
+  "python"
+  "python-cython"
+  "python-matplotlib"
+  "python-networkx"
+  "python-numpy"
+  "python-pandas"
+  "python-scipy"
+  "python-seaborn"
+  "python-statsmodels"
+  "python-tqdm"
+
+  "gcc"         ;should be gcc-toolchain but trick to have the default version
+  ))