API for loading requirements only from requirements.txt

python/openapi/src/com/jetbrains/python/packaging/PyPackageManagers.java

@@ -32,6 +32,21 @@ public abstract class PyPackageManagers {
 
   public abstract PyPackageManager forSdk(Sdk sdk);
 
+  /**
+   * Returns the list of requirements from 'requirements.txt' or 'setup.py' files in the specified module.
+   *
+   * @param module the module to check for requirements
+   * @return the list of requirements, or null if the module contains neither requirements.txt nor setup.py.
+   */
   @Nullable
   public abstract List<PyRequirement> getRequirements(Module module);
+
+  /**
+   * Returns the list of requirements from 'requirements.txt' file in the specified module.
+   *
+   * @param module the module to check for requirements
+   * @return the list of requirements, or null if the module does not contain a requirements.txt
+   */
+  @Nullable
+  public abstract List<PyRequirement> getRequirementsFromTxt(Module module);
 }

python/src/com/jetbrains/python/packaging/PyPackageManagerImpl.java

@@ -436,9 +436,9 @@ public class PyPackageManagerImpl extends PyPackageManager {
   @Nullable
   public static List<PyRequirement> getRequirements(@NotNull Module module) {
     // TODO: Cache requirements, clear cache on requirements.txt or setup.py updates
-    final VirtualFile requirementsTxt = PyPackageUtil.findRequirementsTxt(module);
-    if (requirementsTxt != null) {
-      return PyRequirement.parse(requirementsTxt);
+    List<PyRequirement> requirements = getRequirementsFromTxt(module);
+    if (requirements != null) {
+      return requirements;
     }
     final List<String> lines = new ArrayList<String>();
     for (String name : PyPackageUtil.SETUP_PY_REQUIRES_KWARGS_NAMES) {
@@ -460,6 +460,15 @@ public class PyPackageManagerImpl extends PyPackageManager {
     return null;
   }
 
+  @Nullable
+  public static List<PyRequirement> getRequirementsFromTxt(Module module) {
+    final VirtualFile requirementsTxt = PyPackageUtil.findRequirementsTxt(module);
+    if (requirementsTxt != null) {
+      return PyRequirement.parse(requirementsTxt);
+    }
+    return null;
+  }
+
   public void clearCaches() {
     myPackagesCache = null;
     myExceptionCache = null;

python/src/com/jetbrains/python/packaging/PyPackageManagersImpl.java

@@ -30,4 +30,11 @@ public class PyPackageManagersImpl extends PyPackageManagers {
   public List<PyRequirement> getRequirements(Module module) {
     return PyPackageManagerImpl.getRequirements(module);
   }
+
+
+  @Nullable
+  @Override
+  public List<PyRequirement> getRequirementsFromTxt(Module module) {
+    return PyPackageManagerImpl.getRequirementsFromTxt(module);
+  }
 }