diff --git a/src/builders/make.rs b/src/builders/make.rs
index db0fe7a..e4e19a1 100644
--- a/src/builders/make.rs
+++ b/src/builders/make.rs
@@ -10,6 +10,7 @@ use crate::{
 pub struct Make {
     pub configure: bool,
     pub jobs: usize,
+    pub prefix_args: Option<Vec<String>>,
     pub configure_flags: Option<Vec<String>>,
 }
 
@@ -47,7 +48,17 @@ impl Make {
             shell.add_command(&format!("module load {dep}"));
         }
 
-        let mut configure_cmd = format!("{source_path:?}/configure");
+        // let mut configure_cmd = format!("{source_path:?}/configure");
+
+        // Apply prefix args
+        let mut configure_cmd = String::new();
+        if let Some(args) = &self.prefix_args {
+            for arg in args {
+                configure_cmd.push_str(&format!("{arg} "));
+            }
+        }
+        configure_cmd
+            .push_str(&format!("{}/configure", source_path.to_str().unwrap()));
 
         if let Some(flags) = &self.configure_flags {
             for flag in flags {
@@ -123,13 +134,23 @@ impl BuilderImpl for Make {
             .extract()
             .map_err(|_| "Failed to convert attribute 'jobs' to Rust usize")?;
 
+        let prefix_args: Option<Vec<String>> = object
+            .getattr("prefix_args")
+            .map_err(|_| {
+                "Failed to read attribute 'prefix_args' of Builder object"
+            })?
+            .extract()
+            .map_err(|_| {
+                "Failed to convert attribute 'prefix_args' to Rust Vec<String>"
+            })?;
+
         let configure_flags: Option<Vec<String>> = object
             .getattr("configure_flags")
             .map_err(|_| "Failed to read attribute 'configure_flags' of Builder object")?
             .extract()
             .map_err(|_| "Failed to convert attribute 'configure_flags' to Rust Vec<String>")?;
 
-        Ok(Self { configure, jobs, configure_flags })
+        Ok(Self { configure, jobs, prefix_args, configure_flags })
     }
 
     fn build<
diff --git a/src/config.rs b/src/config.rs
index 7ae73dc..6ab1c63 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -11,6 +11,7 @@ pub struct Config {
     pub build_root: String,
     pub install_root: String,
     pub shell: String,
+    pub class_no_conflict: Vec<String>,
 }
 
 /// Read the sccmod configuration toml file and return the result.
@@ -74,11 +75,28 @@ pub fn read() -> Result<Config, String> {
         .ok_or_else(|| "`install_root` must be a string".to_string())?
         .to_string();
 
+    let class_no_conflict: Vec<String> = table["class_no_conflict"]
+        .as_array()
+        .ok_or_else(|| {
+            "`class_no_conflict` must be an array of strings".to_string()
+        })?
+        .iter()
+        .map(|item| {
+            item.as_str().map(std::string::ToString::to_string).ok_or_else(
+                || {
+                    "`class_no_conflict` must be an array of strings"
+                        .to_string()
+                },
+            )
+        })
+        .collect::<Result<Vec<String>, String>>()?;
+
     Ok(Config {
         sccmod_module_paths,
         modulefile_root,
         build_root,
         install_root,
         shell,
+        class_no_conflict,
     })
 }
diff --git a/src/modulefile.rs b/src/modulefile.rs
index ed54513..bcba294 100644
--- a/src/modulefile.rs
+++ b/src/modulefile.rs
@@ -1,12 +1,24 @@
-use crate::module::{Dependency, Environment, Module};
+use crate::{
+    config,
+    module::{Dependency, Environment, Module},
+};
 
 #[must_use]
 pub fn generate(module: &Module) -> String {
     // Generate a modulefile with support for flavours
     // The modulefile has the following format:
 
+    let config = config::read().unwrap();
+
     let module_class = &module.class;
 
+    let module_conflict =
+        if config.class_no_conflict.contains(&module_class.to_string()) {
+            String::new()
+        } else {
+            format!("::flavours::conflict -class {module_class}\n")
+        };
+
     let mut module_metadata_str = String::new();
     for (key, value) in &module.metadata {
         module_metadata_str.push_str(&format!("# {key}: {value}\n"));
@@ -53,7 +65,8 @@ pub fn generate(module: &Module) -> String {
     let mut environment_variables = String::new();
     for (key, value) in &module.environment {
         environment_variables.push_str(&match value {
-            Environment::Set(val) => format!("setenv \"{key}\" \"{val}\"\n"),
+            // Environment::Set(val) => format!("setenv \"{key}\" \"{val}\"\n"),
+            Environment::Set(val) => format!("::flavours::modify-path setenv \"{key}\" \"{val}\"\n"),
             Environment::Append(val) => format!("::flavours::append-path \"{key}\" \"{val}\"\n"),
             Environment::Prepend(val) => {
                 format!("::flavours::modify-path prepend-path \"{key}\" \"{val}\"\n")
@@ -111,7 +124,8 @@ module-whatis "{module_description}"
 {class_definitions}
 
 # Conflict with other modules of the same class
-::flavours::conflict -class {module_class}
+# ::flavours::conflict -class {module_class}
+{module_conflict}
 
 # Evaluate the flavour
 ::flavours::root     {root_dir}
diff --git a/src/sccmod/builders.py b/src/sccmod/builders.py
index 5b7afaa..4108663 100644
--- a/src/sccmod/builders.py
+++ b/src/sccmod/builders.py
@@ -1,5 +1,7 @@
 class CMake:
-    def __init__(self, build_type="Release", jobs=8, configure_flags=None, cmake_root=None):
+    def __init__(
+        self, build_type="Release", jobs=8, configure_flags=None, cmake_root=None
+    ):
         self.build_type = build_type
         self.jobs = jobs
         self.configure_flags = configure_flags or []
@@ -7,7 +9,8 @@ def __init__(self, build_type="Release", jobs=8, configure_flags=None, cmake_roo
 
 
 class Make:
-    def __init__(self, configure=True, jobs=8, configure_flags=None):
+    def __init__(self, configure=True, jobs=8, prefix_args=None, configure_flags=None):
         self.configure = configure
         self.jobs = jobs
+        self.prefix_args = prefix_args or []
         self.configure_flags = configure_flags or []