Add CoolProp 8 compatibility, drop coolprop<8 dev constraint

ccp/config/fluids.py

@@ -81,10 +81,11 @@ def get_name(name):
 
     try:
         fluid_name = CP.get_REFPROPname(name)
-        # CoolProp returns empty string for invalid fluid names
-        if not fluid_name:
-            raise ValueError(f"Fluid {name} not available. See ccp.fluid_list. ")
-    except RuntimeError:
+    # CoolProp raises RuntimeError (v7) or ValueError (v8) for unknown fluids,
+    # and returns an empty string for invalid names
+    except (RuntimeError, ValueError):
+        fluid_name = ""
+    if not fluid_name:
         raise ValueError(f"Fluid {name} not available. See ccp.fluid_list. ")
 
     return fluid_name

ccp/tests/test_state.py

@@ -52,7 +52,7 @@ def test_eos():
     )
     assert state.p().units == "pascal"
     assert state.T().units == "kelvin"
-    assert state.p().magnitude == 100000
+    assert_allclose(state.p().magnitude, 100000)
     assert state.T().magnitude == 300
     assert_allclose(state.rhomass(), 0.6445687063978816, rtol=1e-6)
 
@@ -61,7 +61,7 @@ def test_eos():
     )
     assert state.p().units == "pascal"
     assert state.T().units == "kelvin"
-    assert state.p().magnitude == 100000
+    assert_allclose(state.p().magnitude, 100000)
     assert state.T().magnitude == 300
     assert_allclose(state.rhomass(), 0.6442384800595821, rtol=1e-6)
 
@@ -88,15 +88,15 @@ def test_eos_config():
     state = State(p=100000, T=300, fluid={"Methane": 1 - 1e-15, "Ethane": 1e-15})
     assert state.p().units == "pascal"
     assert state.T().units == "kelvin"
-    assert state.p().magnitude == 100000
+    assert_allclose(state.p().magnitude, 100000)
     assert state.T().magnitude == 300
     assert_allclose(state.rhomass(), 0.6445687063978816, rtol=1e-6)
 
     ccp.config.EOS = "SRK"
     state = State(p=100000, T=300, fluid={"Methane": 1 - 1e-15, "Ethane": 1e-15})
     assert state.p().units == "pascal"
     assert state.T().units == "kelvin"
-    assert state.p().magnitude == 100000
+    assert_allclose(state.p().magnitude, 100000)
     assert state.T().magnitude == 300
     assert_allclose(state.rhomass(), 0.6442384800595821, rtol=1e-6)
 

pyproject.toml

@@ -112,7 +112,3 @@ dev = [
 
 [tool.uv]
 package = true
-# Dev/CI resolution constraint only (does not affect published metadata):
-# CoolProp 8 changed the exception type raised for unknown fluids and the
-# cubic-EOS roundoff, breaking three tests. Remove once ccp is adapted.
-constraint-dependencies = ["coolprop<8"]