Remove barely used zstd dependency

crates/compiler/module/Cargo.toml

@@ -14,7 +14,6 @@ roc_ident = { path = "../ident" }
 roc_region = { path = "../region" }
 
 bumpalo.workspace = true
-snafu.workspace = true
 static_assertions.workspace = true
 
 [features]

crates/compiler/module/src/module_err.rs

@@ -1,30 +1,45 @@
-use snafu::{Backtrace, Snafu};
-
 use crate::symbol::IdentId;
 
-#[derive(Debug, Snafu)]
-#[snafu(visibility(pub))]
+#[derive(Debug)]
 pub enum ModuleError {
-    #[snafu(display(
-        "ModuleIdNotFound: I could not find the ModuleId {} in Interns.all_ident_ids: {}.",
-        module_id,
-        all_ident_ids
-    ))]
     ModuleIdNotFound {
         module_id: String,
         all_ident_ids: String,
-        backtrace: Backtrace,
     },
-    #[snafu(display(
-        "IdentIdNotFound: I could not find IdentId {:?} in ident_ids {:?}.",
-        ident_id,
-        ident_ids_str
-    ))]
     IdentIdNotFound {
         ident_id: IdentId,
         ident_ids_str: String,
-        backtrace: Backtrace,
     },
 }
 
+impl std::fmt::Display for ModuleError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::ModuleIdNotFound {
+                module_id,
+                all_ident_ids,
+            } => {
+                write!(
+                    f,
+                    "ModuleIdNotFound: I could not find the ModuleId {} in Interns.all_ident_ids: {}.",
+                    module_id,
+                    all_ident_ids
+                )
+            }
+            Self::IdentIdNotFound {
+                ident_id,
+                ident_ids_str,
+            } => {
+                write!(
+                    f,
+                    "IdentIdNotFound: I could not find IdentId {:?} in ident_ids {:?}.",
+                    ident_id, ident_ids_str
+                )
+            }
+        }
+    }
+}
+
+impl std::error::Error for ModuleError {}
+
 pub type ModuleResult<T, E = ModuleError> = std::result::Result<T, E>;

crates/compiler/module/src/symbol.rs

@@ -1,10 +1,9 @@
 use crate::ident::{Ident, Lowercase, ModuleName};
-use crate::module_err::{IdentIdNotFoundSnafu, ModuleIdNotFoundSnafu, ModuleResult};
+use crate::module_err::{ModuleError, ModuleResult};
 use roc_collections::{SmallStringInterner, VecMap};
 use roc_error_macros::internal_error;
 use roc_ident::IdentStr;
 use roc_region::all::Region;
-use snafu::OptionExt;
 use std::num::NonZeroU32;
 use std::{fmt, u32};
 
@@ -324,7 +323,7 @@ pub fn get_module_ident_ids<'a>(
 ) -> ModuleResult<&'a IdentIds> {
     all_ident_ids
         .get(module_id)
-        .with_context(|| ModuleIdNotFoundSnafu {
+        .ok_or_else(|| ModuleError::ModuleIdNotFound {
             module_id: format!("{module_id:?}"),
             all_ident_ids: format!("{all_ident_ids:?}"),
         })
@@ -336,9 +335,10 @@ pub fn get_module_ident_ids_mut<'a>(
 ) -> ModuleResult<&'a mut IdentIds> {
     all_ident_ids
         .get_mut(module_id)
-        .with_context(|| ModuleIdNotFoundSnafu {
+        .ok_or_else(|| ModuleError::ModuleIdNotFound {
             module_id: format!("{module_id:?}"),
-            all_ident_ids: "I could not return all_ident_ids here because of borrowing issues.",
+            all_ident_ids: "I could not return all_ident_ids here because of borrowing issues."
+                .into(),
         })
 }
 
@@ -727,7 +727,7 @@ impl IdentIds {
 
     pub fn get_name_str_res(&self, ident_id: IdentId) -> ModuleResult<&str> {
         self.get_name(ident_id)
-            .with_context(|| IdentIdNotFoundSnafu {
+            .ok_or_else(|| ModuleError::IdentIdNotFound {
                 ident_id,
                 ident_ids_str: format!("{self:?}"),
             })