Fix generation of package interface when modules are cached

CHANGELOG.md

@@ -245,6 +245,10 @@
   private type used in the same module it's defined in.
   ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
 
+- Fixed a bug where `gleam export package-interface` would not properly generate
+  the package interface file if some modules were cached.
+  ([Surya Rose](https://github.com/GearsDatapacks))
+
 ## v1.8.1 - 2025-02-11
 
 ### Bug fixes

compiler-cli/src/docs.rs

@@ -1,6 +1,7 @@
 use std::time::{Instant, SystemTime};
 
 use camino::{Utf8Path, Utf8PathBuf};
+use ecow::EcoString;
 
 use crate::{cli, fs::ProjectIO, http::HttpClient};
 use gleam_core::{
@@ -13,6 +14,7 @@ use gleam_core::{
     hex,
     io::HttpClient as _,
     paths::ProjectPaths,
+    type_,
 };
 
 pub fn remove(package: String, version: String) -> Result<()> {
@@ -60,7 +62,13 @@ pub fn build(paths: &ProjectPaths, options: BuildOptions) -> Result<()> {
         },
         crate::build::download_dependencies(paths, cli::Reporter::new())?,
     )?;
-    let outputs = build_documentation(paths, &config, &mut built.root_package, DocContext::Build)?;
+    let outputs = build_documentation(
+        paths,
+        &config,
+        &mut built.root_package,
+        DocContext::Build,
+        &built.module_interfaces,
+    )?;
 
     // Write
     crate::fs::delete_directory(&out)?;
@@ -100,6 +108,7 @@ pub(crate) fn build_documentation(
     config: &PackageConfig,
     compiled: &mut Package,
     is_hex_publish: DocContext,
+    cached_modules: &im::HashMap<EcoString, type_::ModuleInterface>,
 ) -> Result<Vec<gleam_core::io::OutputFile>, Error> {
     compiled.attach_doc_and_module_comments();
     cli::print_generating_documentation();
@@ -122,6 +131,7 @@ pub(crate) fn build_documentation(
     outputs.push(gleam_core::docs::generate_json_package_interface(
         Utf8PathBuf::from("package-interface.json"),
         compiled,
+        cached_modules,
     ));
     Ok(outputs)
 }
@@ -155,6 +165,7 @@ pub fn publish(paths: &ProjectPaths) -> Result<()> {
         &config,
         &mut built.root_package,
         DocContext::HexPublish,
+        &built.module_interfaces,
     )?;
     let archive = crate::fs::create_tar_archive(outputs)?;
 

compiler-cli/src/export.rs

@@ -143,7 +143,11 @@ pub fn package_interface(paths: &ProjectPaths, out: Utf8PathBuf) -> Result<()> {
     )?;
     built.root_package.attach_doc_and_module_comments();
 
-    let out = gleam_core::docs::generate_json_package_interface(out, &built.root_package);
+    let out = gleam_core::docs::generate_json_package_interface(
+        out,
+        &built.root_package,
+        &built.module_interfaces,
+    );
     crate::fs::write_outputs_under(&[out], paths.root())?;
     Ok(())
 }

compiler-cli/src/publish.rs

@@ -1,4 +1,5 @@
 use camino::{Utf8Path, Utf8PathBuf};
+use ecow::EcoString;
 use flate2::{Compression, write::GzEncoder};
 use gleam_core::{
     Error, Result,
@@ -10,6 +11,7 @@ use gleam_core::{
     hex,
     paths::{self, ProjectPaths},
     requirement::Requirement,
+    type_,
 };
 use hexpm::version::{Range, Version};
 use itertools::Itertools;
@@ -32,6 +34,7 @@ pub fn command(paths: &ProjectPaths, replace: bool, i_am_sure: bool) -> Result<(
 
     let Tarball {
         mut compile_result,
+        cached_modules,
         data: package_tarball,
         src_files_added,
         generated_files_added,
@@ -46,6 +49,7 @@ pub fn command(paths: &ProjectPaths, replace: bool, i_am_sure: bool) -> Result<(
         &config,
         &mut compile_result,
         DocContext::HexPublish,
+        &cached_modules,
     )?)?;
 
     // Ask user if this is correct
@@ -256,6 +260,7 @@ core team.\n",
 
 struct Tarball {
     compile_result: Package,
+    cached_modules: im::HashMap<EcoString, type_::ModuleInterface>,
     data: Vec<u8>,
     src_files_added: Vec<Utf8PathBuf>,
     generated_files_added: Vec<(Utf8PathBuf, String)>,
@@ -372,6 +377,7 @@ fn do_build_hex_tarball(paths: &ProjectPaths, config: &mut PackageConfig) -> Res
     tracing::info!("Generated package Hex release tarball");
     Ok(Tarball {
         compile_result: built.root_package,
+        cached_modules: built.module_interfaces,
         data: tarball,
         src_files_added: src_files,
         generated_files_added: generated_files,