Spack-Snake: A stack for python

Spack has the ability to provide a binary cache of python packages
for general use in the scientific and data analytics communities.
This PR is an effort to begin such a collection

share/spack/gitlab/cloud_pipelines/stacks/spack-snake/spack.yaml

@@ -0,0 +1,44 @@
+spack:
+  view: false
+
+  concretizer:
+    reuse: false
+    unify: false
+    static_analysis: true
+
+  packages:
+    all:
+      require:
+      - "%gcc"
+      - target=x86_64_v3
+      variants: +mpi
+    c:
+      require: gcc
+    cxx:
+      require: gcc
+    fortran:
+      require: gcc
+    mpi:
+      require:
+      - openmpi
+    blas:
+      require:
+      - openblas
+    lapack:
+      require:
+      - openblas
+  specs:
+  - python
+  - py-numpy
+  - py-scipy
+  - py-matplotlib
+  - py-pip
+  - py-mpi4py
+
+  ci:
+    pipeline-gen:
+    - build-job:
+        image: ghcr.io/spack/spack/ubuntu22.04-runner-amd64-gcc-11.4:2024.03.01
+
+  cdash:
+    build-group: spack-snake

var/spack/repos/spack_repo/builtin/packages/qgis/package.py

@@ -17,6 +17,13 @@ class Qgis(CMakePackage):
     maintainers("adamjstewart", "Sinan81")
 
     license("GPL-2.0-or-later")
+
+    # Prefer latest LTR
+    version(
+        "3.40.6",
+        sha256="dd68d39a2a29326031195bed2125e8b0fa7112fe9ee74d5f9850d06b02cef6a8",
+        preferred=True,
+    )
     version("3.40.1", sha256="53110464c9f5ba5562c437e1563ab36dad2f218e6e7d1c0cfbe5b6effe241c8e")
     #  version 3.36 isn't building right now.
     version(
@@ -24,12 +31,8 @@ class Qgis(CMakePackage):
         sha256="1b64bc92660bf07edc6b6478fc6a13656149e87d92eabe5c3db9493072506e2c",
         deprecated=True,
     )
-    # Prefer latest LTR
-    version(
-        "3.34.13",
-        sha256="a8873ca9bae346bae48ef3fe3eed702ef1f06d951201464464a64019302ba50b",
-        preferred=True,
-    )
+    version("3.34.15", sha256="afb0bed05ffbc7bcb6d27dd1a8644b1e63ac2cb322baa058ff65b848c760efc2")
+    version("3.34.13", sha256="a8873ca9bae346bae48ef3fe3eed702ef1f06d951201464464a64019302ba50b")
     version("3.34.4", sha256="7d1c5fafff13f508a9bcf6244c9666f891351deb1ace2aedcc63504f070c5ce4")
     version("3.34.0", sha256="348a2df4c4520813a319b7f72546b3823e044cacd28646ba189b56a49c7d1b5f")
     version("3.28.15", sha256="217342ba2232cc8fe5bf8f3671c2b3d6daf5504c33006b67424373e70d568dfa")

var/spack/repos/spack_repo/builtin/packages/qscintilla/package.py

@@ -15,6 +15,8 @@ class Qscintilla(QMakePackage):
     homepage = "https://www.riverbankcomputing.com/software/qscintilla/intro"
     url = "https://www.riverbankcomputing.com/static/Downloads/QScintilla/2.12.0/QScintilla_src-2.12.0.tar.gz"
 
+    maintainers("Sinan81")
+
     license("GPL-3.0-only")
 
     version("2.14.1", sha256="dfe13c6acc9d85dfcba76ccc8061e71a223957a6c02f3c343b30a9d43a4cdd4d")
@@ -38,7 +40,7 @@ class Qscintilla(QMakePackage):
     depends_on("py-pyqt5", type=("build", "run"), when="+python ^qt@5")
     depends_on("python", type=("build", "run"), when="+python")
     # adter install inquires py-sip variant : so we need to have it
-    depends_on("py-sip", type="build", when="~python")
+    depends_on("py-sip", type="build", when="+python")
 
     extends("python", when="+python")
 
@@ -118,7 +120,7 @@ def make_qsci_python(self):
 
             mkdirp(os.path.join(self.prefix.share.sip, pyqtx))
 
-            sip_build = Executable(self.spec["py-sip"].prefix.bin.join("sip-build"))
+            sip_build = Executable(self["py-sip"].prefix.bin.join("sip-build"))
             sip_build(
                 "--target-dir=" + python_platlib,
                 "--qsci-include-dir=" + self.spec.prefix.include,