Add NEST 3.9 for CI (#1249)

Author: pnbabu

.github/workflows/nestml-build.yml

@@ -167,7 +167,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        nest_branch: ["v2.20.2", "v3.0", "v3.8", "master"]
+        nest_branch: ["v2.20.2", "v3.0", "v3.9", "master"]
       fail-fast: false
     steps:
       # Checkout the repository contents

pynestml/codegeneration/nest_tools.py

@@ -46,6 +46,7 @@ def detect_nest_version(cls) -> str:
 
 try:
     import nest
+    import semver
 
     vt = nest.Create("volume_transmitter")
 
@@ -58,24 +59,27 @@ def detect_nest_version(cls) -> str:
     except Exception:
         pass
 
-    if "DataConnect" in dir(nest):
-            nest_version = "v2.20.2"
-    else:
-        nest_version = "v" + nest.__version__
-        if nest_version.startswith("v3.5") or nest_version.startswith("v3.6") or nest_version.startswith("v3.7") or nest_version.startswith("v3.8"):
-            if "post0.dev0" in nest_version:
+    try:
+        # For NEST version <= 3.4, the version string is not parsable by semver.
+        ver = semver.Version.parse(nest.__version__)
+        if ver.major >= 3 and ver.minor >= 5:
+            if ver.prerelease and "post0.dev0" in ver.prerelease:
                 nest_version = "master"
-        else:
-            if "kernel_status" not in dir(nest):  # added in v3.1
-                nest_version = "v3.0"
-            elif "prepared" in nest.GetKernelStatus().keys():  # "prepared" key was added after v3.3 release
-                nest_version = "v3.4"
-            elif "tau_u_bar_minus" in neuron.get().keys():   # added in v3.3
-                nest_version = "v3.3"
-            elif "tau_Ca" in vt.get().keys():   # removed in v3.2
-                nest_version = "v3.1"
             else:
-                nest_version = "v3.2"
+                nest_version = "v" + nest.__version__
+    except (AttributeError, ValueError):
+        if "DataConnect" in dir(nest):
+            nest_version = "v2.20.2"
+        elif "kernel_status" not in dir(nest):  # added in v3.1
+            nest_version = "v3.0"
+        elif "prepared" in nest.GetKernelStatus().keys():  # "prepared" key was added after v3.3 release
+            nest_version = "v3.4"
+        elif "tau_u_bar_minus" in neuron.get().keys():   # added in v3.3
+            nest_version = "v3.3"
+        elif "tau_Ca" in vt.get().keys():   # removed in v3.2
+            nest_version = "v3.1"
+        else:
+            nest_version = "v3.2"
 except ModuleNotFoundError:
     nest_version = ""
 

requirements.txt

@@ -7,4 +7,5 @@ setuptools
 Jinja2 >= 2.10
 typing;python_version<"3.5"
 astropy
+semver
 odetoolbox >= 2.5.9