Merge branch 'nix-shell' into 'main'

Nix shell

See merge request bde/nk20!201

.gitignore

@@ -48,7 +48,6 @@ backups/
 env/
 venv/
 db.sqlite3
-shell.nix
 
 # ansibles customs host
 ansible/host_vars/*.yaml

apps/activity/views.py

@@ -17,7 +17,8 @@ from django.utils.translation import gettext_lazy as _
 from django.views import View
 from django.views.decorators.cache import cache_page
 from django.views.generic import DetailView, TemplateView, UpdateView
-from django_tables2.views import SingleTableView
+from django.views.generic.list import ListView
+from django_tables2.views import MultiTableMixin
 from note.models import Alias, NoteSpecial, NoteUser
 from permission.backends import PermissionBackend
 from permission.views import ProtectQuerysetMixin, ProtectedCreateView
@@ -57,27 +58,40 @@ class ActivityCreateView(ProtectQuerysetMixin, ProtectedCreateView):
         return reverse_lazy('activity:activity_detail', kwargs={"pk": self.object.pk})
 
 
-class ActivityListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView):
+class ActivityListView(ProtectQuerysetMixin, LoginRequiredMixin, MultiTableMixin, ListView):
     """
     Displays all Activities, and classify if they are on-going or upcoming ones.
     """
     model = Activity
-    table_class = ActivityTable
+    tables = [ActivityTable, ActivityTable]
-    ordering = ('-date_start',)
     extra_context = {"title": _("Activities")}
 
     def get_queryset(self, **kwargs):
         return super().get_queryset(**kwargs).distinct()
 
+    def get_tables(self):
+        tables = super().get_tables()
+
+        tables[0].prefix = "all-"
+        tables[1].prefix = "upcoming-"
+        return tables
+
+    def get_tables_data(self):
+        # first table = all activities, second table = upcoming
+        return [
+            self.get_queryset().order_by("-date_start"),
+            Activity.objects.filter(date_end__gt=timezone.now())
+                            .filter(PermissionBackend.filter_queryset(self.request, Activity, "view"))
+                            .distinct()
+                            .order_by("date_start")
+        ]
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
 
-        upcoming_activities = Activity.objects.filter(date_end__gt=timezone.now())
+        tables = context["tables"]
-        context['upcoming'] = ActivityTable(
+        for name, table in zip(["table", "upcoming"], tables):
-            data=upcoming_activities.filter(PermissionBackend.filter_queryset(self.request, Activity, "view")),
+            context[name] = table
-            prefix='upcoming-',
-            order_by='date_start',
-        )
 
         started_activities = self.get_queryset().filter(open=True, valid=True).distinct().all()
         context["started_activities"] = started_activities

apps/member/forms.py

@@ -138,6 +138,9 @@ class ImageForm(forms.Form):
 
         return cleaned_data
 
+    def is_valid(self):
+        return super().is_valid() or super().clean().get('image') is None
+
 
 class ClubForm(forms.ModelForm):
     def clean(self):
@@ -151,7 +154,7 @@ class ClubForm(forms.ModelForm):
 
     class Meta:
         model = Club
-        fields = '__all__'
+        exclude = ("add_registration_form",)
         widgets = {
             "membership_fee_paid": AmountInput(),
             "membership_fee_unpaid": AmountInput(),

apps/member/migrations/0012_club_add_registration_form.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.28 on 2024-07-15 09:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('member', '0011_profile_vss_charter_read'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='club',
+            name='add_registration_form',
+            field=models.BooleanField(default=False, verbose_name='add to registration form'),
+        ),
+    ]

apps/member/models.py

@@ -259,6 +259,11 @@ class Club(models.Model):
         help_text=_('Maximal date of a membership, after which members must renew it.'),
     )
 
+    add_registration_form = models.BooleanField(
+        verbose_name=_("add to registration form"),
+        default=False,
+    )
+
     class Meta:
         verbose_name = _("club")
         verbose_name_plural = _("clubs")

apps/member/templates/member/picture_update.html

@@ -14,6 +14,9 @@ SPDX-License-Identifier: GPL-3.0-or-later
       <form method="post" enctype="multipart/form-data" id="formUpload">
         {% csrf_token %}
         {{ form |crispy }}
+        {% if user.note.display_image != "pic/default.png" %}
+          <input type="submit" class="btn btn-primary" value="{% trans "Remove" %}">
+        {% endif %}
       </form>
     </div>
     <!-- MODAL TO CROP THE IMAGE -->

apps/member/views.py

@@ -326,12 +326,15 @@ class PictureUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin, Det
         """Save image to note"""
         image = form.cleaned_data['image']
 
-        # Rename as a PNG or GIF
+        if image is None:
-        extension = image.name.split(".")[-1]
+            image = "pic/default.png"
-        if extension == "gif":
-            image.name = "{}_pic.gif".format(self.object.note.pk)
         else:
-            image.name = "{}_pic.png".format(self.object.note.pk)
+            # Rename as a PNG or GIF
+            extension = image.name.split(".")[-1]
+            if extension == "gif":
+                image.name = "{}_pic.gif".format(self.object.note.pk)
+            else:
+                image.name = "{}_pic.png".format(self.object.note.pk)
 
         # Save
         self.object.note.display_image = image

apps/note/templates/note/mails/negative_balance.html

@@ -23,7 +23,7 @@
 
 <p>
     Par ailleurs, le BDE ne sert pas d'alcool aux adhérents dont le solde
-    est inférieur à 0 € depuis plus de 24h.
+    est inférieur à 0 €.
 </p>
 
 <p>

apps/permission/fixtures/initial.json

@@ -2591,12 +2591,12 @@
 				"note",
 				"transaction"
 			],
-			"query": "[\"OR\", {\"source__balance__gte\": {\"F\": [\"SUB\", [\"MUL\", [\"F\", \"amount\"], [\"F\", \"quantity\"]], 2000]}}, {\"valid\": false}]",
+			"query": "[\"OR\", {\"source__balance__gte\": 0}, [\"AND\", [\"NOT\", {\"recurrenttransaction__template__category__name\": \"Alcool\"}], {\"source__balance__gte\": {\"F\": [\"SUB\", [\"MUL\", [\"F\", \"amount\"], [\"F\", \"quantity\"]], 2000]}}], {\"valid\": false}]",
 			"type": "add",
 			"mask": 2,
 			"field": "",
 			"permanent": false,
-			"description": "Créer une transaction quelconque tant que la source reste au-dessus de -20 €"
+			"description": "Créer une transaction quelconque tant que la source reste positive s'il s'agit d'alcool, sinon au-dessus de -20€"
 		}
 	},
 	{

apps/registration/forms.py

@@ -5,7 +5,6 @@ from django import forms
 from django.contrib.auth.forms import UserCreationForm
 from django.contrib.auth.models import User
 from django.utils.translation import gettext_lazy as _
-# from member.models import Club
 from note.models import NoteSpecial, Alias
 from note_kfet.inputs import AmountInput
 
@@ -115,12 +114,3 @@ class ValidationForm(forms.Form):
         required=False,
         initial=True,
     )
-
-#     If the bda exists
-#     if Club.objects.filter(name__iexact="bda").exists():
-#         The user can join the bda club at the inscription
-#         join_bda = forms.BooleanField(
-#             label=_("Join BDA Club"),
-#             required=False,
-#             initial=True,
-#         )

apps/registration/views.py

@@ -1,6 +1,7 @@
 # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+from django import forms
 from django.conf import settings
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.auth.models import User
@@ -238,9 +239,8 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
         fee += bde.membership_fee_paid if user.profile.paid else bde.membership_fee_unpaid
         kfet = Club.objects.get(name="Kfet")
         fee += kfet.membership_fee_paid if user.profile.paid else kfet.membership_fee_unpaid
-        if Club.objects.filter(name__iexact="BDA").exists():
+        for club in Club.objects.filter(add_registration_form=True):
-            bda = Club.objects.get(name__iexact="BDA")
+            fee += club.membership_fee_paid if user.profile.paid else club.membership_fee_unpaid
-            fee += bda.membership_fee_paid if user.profile.paid else bda.membership_fee_unpaid
         ctx["total_fee"] = "{:.02f}".format(fee / 100, )
 
 #        ctx["declare_soge_account"] = SogeCredit.objects.filter(user=user).exists()
@@ -249,6 +249,16 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
 
     def get_form(self, form_class=None):
         form = super().get_form(form_class)
+
+        # add clubs that are in registration form
+        for club in Club.objects.filter(add_registration_form=True).order_by("name"):
+            form_join_club = forms.BooleanField(
+                label=_("Join %(club)s Club") % {'club': club.name},
+                required=False,
+                initial=False,
+            )
+            form.fields.update({f"join_{club.id}": form_join_club})
+
         user = self.get_object()
         form.fields["last_name"].initial = user.last_name
         form.fields["first_name"].initial = user.first_name
@@ -266,11 +276,6 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
             form.add_error(None, _("An alias with a similar name already exists."))
             return self.form_invalid(form)
 
-        # Check if BDA exist to propose membership at regisration
-        bda_exists = False
-        if Club.objects.filter(name__iexact="BDA").exists():
-            bda_exists = True
-
         # Get form data
 #        soge = form.cleaned_data["soge"]
         credit_type = form.cleaned_data["credit_type"]
@@ -280,8 +285,9 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
         bank = form.cleaned_data["bank"]
         join_bde = form.cleaned_data["join_bde"]
         join_kfet = form.cleaned_data["join_kfet"]
-        if bda_exists:
+
-            join_bda = form.cleaned_data["join_bda"]
+        clubs_registration = Club.objects.filter(add_registration_form=True).order_by("name")
+        join_clubs = [(club, form.cleaned_data[f"join_{club.id}"]) for club in clubs_registration]
 
 #        if soge:
 #            # If Société Générale pays the inscription, the user automatically joins the two clubs.
@@ -303,11 +309,12 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
         kfet_fee = kfet.membership_fee_paid if user.profile.paid else kfet.membership_fee_unpaid
         # Add extra fee for the full membership
         fee += kfet_fee if join_kfet else 0
-        if bda_exists:
+        clubs_fee = dict()
-            bda = Club.objects.get(name__iexact="BDA")
+        for club, join_club in join_clubs:
-            bda_fee = bda.membership_fee_paid if user.profile.paid else bda.membership_fee_unpaid
+            club_fee = club.membership_fee_paid if user.profile.paid else club.membership_fee_unpaid
-            # Add extra fee for the bda membership
+            # Add extra fee for the club membership
-            fee += bda_fee if join_bda else 0
+            clubs_fee[club] = club_fee
+            fee += club_fee if join_club else 0
 
 #        # If the bank pays, then we don't credit now. Treasurers will validate the transaction
 #        # and credit the note later.
@@ -387,17 +394,18 @@ class FutureUserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, FormMixin,
             membership.roles.add(Role.objects.get(name="Adhérent Kfet"))
             membership.save()
 
-        if bda_exists and join_bda:
+        for club, join_club in join_clubs:
-            # Create membership for the user to the BDA starting today
+            if join_club:
-            membership = Membership(
+                # Create membership for the user to the BDA starting today
-                club=bda,
+                membership = Membership(
-                user=user,
+                    club=club,
-                fee=bda_fee,
+                    user=user,
-            )
+                    fee=clubs_fee[club],
-            membership.save()
+                )
-            membership.refresh_from_db()
+                membership.save()
-            membership.roles.add(Role.objects.get(name="Membre de club"))
+                membership.refresh_from_db()
-            membership.save()
+                membership.roles.add(Role.objects.get(name="Membre de club"))
+                membership.save()
 
 #        if soge:
 #            soge_credit = SogeCredit.objects.get(user=user)

locale/fr/LC_MESSAGES/django.po

@@ -114,7 +114,7 @@ msgstr "Lieu où l'activité est organisée, par exemple la Kfet."
 msgid "type"
 msgstr "type"
 
-#: apps/activity/models.py:89 apps/logs/models.py:22 apps/member/models.py:313
+#: apps/activity/models.py:89 apps/logs/models.py:22 apps/member/models.py:318
 #: apps/note/models/notes.py:148 apps/treasury/models.py:293
 #: apps/wei/models.py:171 apps/wei/templates/wei/attribute_bus_1A.html:13
 #: apps/wei/templates/wei/survey.html:15
@@ -247,6 +247,7 @@ msgid "The validation of the activity is pending."
 msgstr "La validation de cette activité est en attente."
 
 #: apps/activity/tables.py:43 apps/treasury/tables.py:107
+#: apps/member/templates/member/picture_update.html:18
 msgid "Remove"
 msgstr "Supprimer"
 
@@ -262,13 +263,13 @@ msgstr "supprimer"
 msgid "Type"
 msgstr "Type"
 
-#: apps/activity/tables.py:84 apps/member/forms.py:193
+#: apps/activity/tables.py:84 apps/member/forms.py:196
 #: apps/registration/forms.py:92 apps/treasury/forms.py:131
 #: apps/wei/forms/registration.py:104
 msgid "Last name"
 msgstr "Nom de famille"
 
-#: apps/activity/tables.py:86 apps/member/forms.py:198
+#: apps/activity/tables.py:86 apps/member/forms.py:201
 #: apps/note/templates/note/transaction_form.html:138
 #: apps/registration/forms.py:97 apps/treasury/forms.py:133
 #: apps/wei/forms/registration.py:109
@@ -400,37 +401,37 @@ msgstr "Inviter"
 msgid "Create new activity"
 msgstr "Créer une nouvelle activité"
 
-#: apps/activity/views.py:67 note_kfet/templates/base.html:90
+#: apps/activity/views.py:68 note_kfet/templates/base.html:90
 msgid "Activities"
 msgstr "Activités"
 
-#: apps/activity/views.py:93
+#: apps/activity/views.py:108
 msgid "Activity detail"
 msgstr "Détails de l'activité"
 
-#: apps/activity/views.py:113
+#: apps/activity/views.py:128
 msgid "Update activity"
 msgstr "Modifier l'activité"
 
-#: apps/activity/views.py:140
+#: apps/activity/views.py:155
 msgid "Invite guest to the activity \"{}\""
 msgstr "Invitation pour l'activité « {} »"
 
-#: apps/activity/views.py:178
+#: apps/activity/views.py:193
 msgid "You are not allowed to display the entry interface for this activity."
 msgstr ""
 "Vous n'êtes pas autorisé·e à afficher l'interface des entrées pour cette "
 "activité."
 
-#: apps/activity/views.py:181
+#: apps/activity/views.py:196
 msgid "This activity does not support activity entries."
 msgstr "Cette activité ne requiert pas d'entrées."
 
-#: apps/activity/views.py:184
+#: apps/activity/views.py:199
 msgid "This activity is closed."
 msgstr "Cette activité est fermée."
 
-#: apps/activity/views.py:280
+#: apps/activity/views.py:295
 msgid "Entry for activity \"{}\""
 msgstr "Entrées pour l'activité « {} »"
 
@@ -507,11 +508,11 @@ msgstr "cotisation pour adhérer (normalien·ne élève)"
 msgid "membership fee (unpaid students)"
 msgstr "cotisation pour adhérer (normalien·ne étudiant·e)"
 
-#: apps/member/admin.py:65 apps/member/models.py:325
+#: apps/member/admin.py:65 apps/member/models.py:330
 msgid "roles"
 msgstr "rôles"
 
-#: apps/member/admin.py:66 apps/member/models.py:339
+#: apps/member/admin.py:66 apps/member/models.py:344
 msgid "fee"
 msgstr "cotisation"
 
@@ -563,29 +564,29 @@ msgid "This image cannot be loaded."
 msgstr "Cette image ne peut pas être chargée."
 
 #: apps/member/forms.py:148 apps/member/views.py:102
-#: apps/registration/forms.py:34 apps/registration/views.py:266
+#: apps/registration/forms.py:34 apps/registration/views.py:276
 msgid "An alias with a similar name already exists."
 msgstr "Un alias avec un nom similaire existe déjà."
 
-#: apps/member/forms.py:172
+#: apps/member/forms.py:175
 msgid "Inscription paid by Société Générale"
 msgstr "Inscription payée par la Société générale"
 
-#: apps/member/forms.py:174
+#: apps/member/forms.py:177
 msgid "Check this case if the Société Générale paid the inscription."
 msgstr "Cochez cette case si la Société Générale a payé l'inscription."
 
-#: apps/member/forms.py:179 apps/registration/forms.py:79
+#: apps/member/forms.py:182 apps/registration/forms.py:79
 #: apps/wei/forms/registration.py:91
 msgid "Credit type"
 msgstr "Type de rechargement"
 
-#: apps/member/forms.py:180 apps/registration/forms.py:80
+#: apps/member/forms.py:183 apps/registration/forms.py:80
 #: apps/wei/forms/registration.py:92
 msgid "No credit"
 msgstr "Pas de rechargement"
 
-#: apps/member/forms.py:182
+#: apps/member/forms.py:185
 msgid "You can credit the note of the user."
 msgstr "Vous pouvez créditer la note de l'utilisateur·ice avant l'adhésion."
 
@@ -594,17 +595,17 @@ msgstr "Vous pouvez créditer la note de l'utilisateur·ice avant l'adhésion."
 msgid "Credit amount"
 msgstr "Montant à créditer"
 
-#: apps/member/forms.py:203 apps/note/templates/note/transaction_form.html:144
+#: apps/member/forms.py:206 apps/note/templates/note/transaction_form.html:144
 #: apps/registration/forms.py:102 apps/treasury/forms.py:135
 #: apps/wei/forms/registration.py:114
 msgid "Bank"
 msgstr "Banque"
 
-#: apps/member/forms.py:230
+#: apps/member/forms.py:233
 msgid "User"
 msgstr "Utilisateur·ice"
 
-#: apps/member/forms.py:244
+#: apps/member/forms.py:247
 msgid "Roles"
 msgstr "Rôles"
 
@@ -852,46 +853,50 @@ msgstr ""
 "Date maximale d'une fin d'adhésion, après laquelle les adhérent·e·s doivent la "
 "renouveler."
 
-#: apps/member/models.py:263 apps/member/models.py:319
+#: apps/member/models.py:263
+msgid "add to registration form"
+msgstr "ajouter au formulaire d'inscription"
+
+#: apps/member/models.py:268 apps/member/models.py:324
 #: apps/note/models/notes.py:176
 msgid "club"
 msgstr "club"
 
-#: apps/member/models.py:264
+#: apps/member/models.py:269
 msgid "clubs"
 msgstr "clubs"
 
-#: apps/member/models.py:330
+#: apps/member/models.py:335
 msgid "membership starts on"
 msgstr "l'adhésion commence le"
 
-#: apps/member/models.py:334
+#: apps/member/models.py:339
 msgid "membership ends on"
 msgstr "l'adhésion finit le"
 
-#: apps/member/models.py:343 apps/note/models/transactions.py:385
+#: apps/member/models.py:348 apps/note/models/transactions.py:385
 msgid "membership"
 msgstr "adhésion"
 
-#: apps/member/models.py:344
+#: apps/member/models.py:349
 msgid "memberships"
 msgstr "adhésions"
 
-#: apps/member/models.py:348
+#: apps/member/models.py:353
 #, python-brace-format
 msgid "Membership of {user} for the club {club}"
 msgstr "Adhésion de {user} pour le club {club}"
 
-#: apps/member/models.py:367
+#: apps/member/models.py:372
 #, python-brace-format
 msgid "The role {role} does not apply to the club {club}."
 msgstr "Le rôle {role} ne s'applique pas au club {club}."
 
-#: apps/member/models.py:376 apps/member/views.py:712
+#: apps/member/models.py:381 apps/member/views.py:712
 msgid "User is already a member of the club"
 msgstr "L'utilisateur·ice est déjà membre du club"
 
-#: apps/member/models.py:388 apps/member/views.py:721
+#: apps/member/models.py:393 apps/member/views.py:721
 msgid "User is not a member of the parent club"
 msgstr "L'utilisateur·ice n'est pas membre du club parent"
 
@@ -1153,11 +1158,11 @@ msgstr "Introspection :"
 msgid "Show my applications"
 msgstr "Voir mes applications"
 
-#: apps/member/templates/member/picture_update.html:35
+#: apps/member/templates/member/picture_update.html:38
 msgid "Nevermind"
 msgstr "Annuler"
 
-#: apps/member/templates/member/picture_update.html:36
+#: apps/member/templates/member/picture_update.html:39
 msgid "Crop and upload"
 msgstr "Recadrer et envoyer"
 
@@ -2183,18 +2188,23 @@ msgstr "Utilisateur·ice·s en attente d'inscription"
 msgid "Registration detail"
 msgstr "Détails de l'inscription"
 
-#: apps/registration/views.py:293
+#: apps/registration/views.py:256
+#, python-format
+msgid "Join %(club)s Club"
+msgstr "Adhérer au club %(club)s"
+
+#: apps/registration/views.py:299
 msgid "You must join the BDE."
 msgstr "Vous devez adhérer au BDE."
 
-#: apps/registration/views.py:323
+#: apps/registration/views.py:330
 msgid ""
 "The entered amount is not enough for the memberships, should be at least {}"
 msgstr ""
 "Le montant crédité est trop faible pour adhérer, il doit être au minimum de "
 "{}"
 
-#: apps/registration/views.py:417
+#: apps/registration/views.py:425
 msgid "Invalidate pre-registration"
 msgstr "Invalider l'inscription"
 
@@ -3620,9 +3630,6 @@ msgstr ""
 "d'adhésion. Vous devez également valider votre adresse email en suivant le "
 "lien que vous avez reçu."
 
-#~ msgid "Join BDA Club"
-#~ msgstr "Adhérer au club BDA"
-
 #, fuzzy
 #~| msgid "People having you as a friend"
 #~ msgid "You already have that person as a friend"

shell-static.nix

@@ -0,0 +1,34 @@
+# This is a workaround meant for use with the nix package manager. If you don't know what it is or don't use it, please ignore this file.
+# 
+# The nk20 javascript static location are hardcoded for imperative system.
+# This make ./manage.py collectstatic hard to use with nixos.
+# 
+# A workaround is to enter a FHSUserEnv with the static placed under /share/javascript/<static>.
+# This emulate a debian like system and enable collecting static normally with ./manage.py collectstatics.
+# The regular shell.nix should be enough for other configurations.
+#
+# Warning, you are still supposed to use pip package with a venv !
+{ pkgs ? import <nixpkgs> {} }:
+(pkgs.buildFHSUserEnv {
+  name = "pipzone";
+  targetPkgs = pkgs: (with pkgs;
+  let
+    fhs-static = stdenv.mkDerivation {
+      name = "fhs-static";
+      buildCommand = ''
+      mkdir -p $out/share/javascript/bootstrap4
+      mkdir -p $out/share/javascript/jquery
+      ln -s ${python39Packages.xstatic-bootstrap}/lib/python3.9/site-packages/xstatic/pkg/bootstrap/data/* $out/share/javascript/bootstrap4
+      ln -s ${python39Packages.xstatic-jquery}/lib/python3.9/site-packages/xstatic/pkg/jquery/data/* $out/share/javascript/jquery
+    '';
+    };
+  in [
+    fhs-static
+    python39
+    gettext
+    python39Packages.pip
+    python39Packages.virtualenv
+    python39Packages.setuptools
+  ]);
+  runScript = "bash";
+}).env

shell.nix

@@ -0,0 +1,23 @@
+# This is meant for use with the nix package manager. If you don't know what it is or don't use it, please ignore this file.
+#
+# This shell.nix contains all dependencies require to create a venv and pip install -r requirements.txt.
+#
+# Please check shell-static.nix for running ./manage.py collectstatics.
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    python39
+    python39Packages.pip
+    python39Packages.setuptools
+    gettext
+
+  ];
+  shellHook = ''
+    # Tells pip to put packages into $PIP_PREFIX instead of the usual locations.
+    # See https://pip.pypa.io/en/stable/user_guide/#environment-variables.
+    export PIP_PREFIX=$(pwd)/_build/pip_packages
+    export PYTHONPATH="$PIP_PREFIX/${pkgs.python39.sitePackages}:$PYTHONPATH"
+    export PATH="$PIP_PREFIX/bin:$PATH"
+    unset SOURCE_DATE_EPOCH
+  '';
+}