test: free RAM between multi-package describes to fix CI OOM

.bun-version

@@ -0,0 +1 @@
+1.3.13

.github/workflows/ci.yml

@@ -16,6 +16,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -37,6 +39,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -52,6 +56,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Build and pack
         run: |
@@ -83,6 +89,8 @@ jobs:
       - name: Setup Bun
         if: matrix.package-manager == 'bun'
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Setup Node.js
         if: matrix.package-manager != 'bun'

.github/workflows/release.yml

@@ -25,6 +25,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -76,6 +78,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile

.github/workflows/sdk-tests.yml

@@ -15,6 +15,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
@@ -50,6 +52,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -78,6 +82,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -107,6 +113,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -122,6 +130,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - uses: actions/setup-python@v6
         with:
@@ -156,6 +166,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - uses: actions/setup-python@v6
         with:
@@ -190,6 +202,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -205,6 +219,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile
@@ -224,6 +240,8 @@ jobs:
 
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
+        with:
+          bun-version-file: .bun-version
 
       - name: Setup Java
         uses: actions/setup-java@v5

CLAUDE.md

@@ -130,6 +130,7 @@ FHIR Package → TypeSchema Generator → TypeSchema Format → Code Generators
 - Unit tests for core functionality (transformers, builders)
 - Tests mirror source structure in `test/unit/`
 - API tests for high-level generators
+- SQL-on-FHIR is split into per-language files (`sql-on-fhir-typescript.test.ts`, `sql-on-fhir-python.test.ts`, `sql-on-fhir-csharp.test.ts`) and the `test` Makefile target runs each as a separate `bun test` invocation. The combined file ran out of memory on `ubuntu-latest` (~7 GiB) because all three generators built simultaneously against R5 + the SQL-on-FHIR IG. Each file gets its own bun process so peak memory is bounded to one generator's output at a time. Do not recombine.
 
 ### Example Test Structure
 
@@ -354,6 +355,7 @@ Detection uses `mkIsFamilyType(tsIndex)` which checks `schema.typeFamily.resourc
 3. **Choice Types**: Supported but representation differs by language
 4. **Circular References**: Handled but may affect tree shaking
 5. **Large Packages**: May require increased Node.js memory (`--max-old-space-size`)
+6. **Bun version pinned via `.bun-version`**: Bun 1.3.14 introduced a memory regression that OOM-kills `make test` on `ubuntu-latest`. Stick to the version pinned in `.bun-version` until a fixed Bun release is verified to pass CI.
 
 ## Performance Optimization Tips
 

Makefile

@@ -31,7 +31,10 @@ typecheck:
 	$(TYPECHECK)
 
 test: typecheck
-	bun test
+	bun test --path-ignore-patterns '**/sql-on-fhir-*.test.ts'
+	bun test test/api/write-generator/multi-package/sql-on-fhir-typescript.test.ts
+	bun test test/api/write-generator/multi-package/sql-on-fhir-python.test.ts
+	bun test test/api/write-generator/multi-package/sql-on-fhir-csharp.test.ts
 
 prepare-aidbox-runme:
 	@if [ ! -f "example/docker-compose.yaml" ]; then \

test/api/write-generator/csharp.test.ts

@@ -20,3 +20,5 @@ describe("C# Writer Generator", async () => {
         expect(files["generated/types/Helper.cs"]).toMatchSnapshot();
     });
 });
+
+Bun.gc(true);

test/api/write-generator/introspection.test.ts

@@ -150,3 +150,5 @@ describe("IntrospectionWriter - StructureDefinition output", async () => {
         expect(files["generated/structure-definitions.ndjson"]).toMatchSnapshot();
     });
 });
+
+Bun.gc(true);

test/api/write-generator/multi-package/__snapshots__/sql-on-fhir-csharp.test.ts.snap

@@ -0,0 +1,120 @@
+// Bun Snapshot v1, https://bun.sh/docs/test/snapshots
+
+exports[`SQL-on-FHIR C# Generation should generate ViewDefinition type (promoted logical) 1`] = `
+"// WARNING: This file is autogenerated by @atomic-ehr/codegen.
+// GitHub: https://github.com/atomic-ehr/codegen
+// Any manual changes made to this file may be overwritten.
+
+
+namespace Fhir.Types.OrgSqlOnFhirIg;
+
+public class ViewDefinition : CanonicalResource {
+    public ViewDefinitionConstant[]? Constant { get; set; }
+    public ViewDefinitionFhirVersionBindingEnum[]? FhirVersion { get; set; }
+    public string? Name { get; set; }
+    public string[]? Profile { get; set; }
+    public required string Resource { get; set; }
+    public required ViewDefinitionSelect[] Select { get; set; }
+    public ViewDefinitionWhere[]? Where { get; set; }
+
+    public class ViewDefinitionConstant : BackboneElement {
+        public required string Name { get; set; }
+        public string? ValueBase64binary { get; set; }
+        public bool? ValueBoolean { get; set; }
+        public string? ValueCanonical { get; set; }
+        public string? ValueCode { get; set; }
+        public string? ValueDate { get; set; }
+        public string? ValueDateTime { get; set; }
+        public decimal? ValueDecimal { get; set; }
+        public string? ValueId { get; set; }
+        public string? ValueInstant { get; set; }
+        public int? ValueInteger { get; set; }
+        public long? ValueInteger64 { get; set; }
+        public string? ValueOid { get; set; }
+        public long? ValuePositiveInt { get; set; }
+        public string? ValueString { get; set; }
+        public string? ValueTime { get; set; }
+        public long? ValueUnsignedInt { get; set; }
+        public string? ValueUri { get; set; }
+        public string? ValueUrl { get; set; }
+        public string? ValueUuid { get; set; }
+
+        public override string ToString() => 
+            JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+    }
+
+    public class ViewDefinitionSelect : BackboneElement {
+        public ViewDefinitionSelectColumn[]? Column { get; set; }
+        public string? ForEach { get; set; }
+        public string? ForEachOrNull { get; set; }
+        public string[]? Repeat { get; set; }
+        public ViewDefinitionSelect[]? Select { get; set; }
+        public ViewDefinitionSelect[]? UnionAll { get; set; }
+
+        public override string ToString() => 
+            JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+    }
+
+    public class ViewDefinitionSelectColumn : BackboneElement {
+        public bool? Collection { get; set; }
+        public string? Description { get; set; }
+        public required string Name { get; set; }
+        public required string Path { get; set; }
+        public ViewDefinitionSelectColumnTag[]? Tag { get; set; }
+        public string? Type { get; set; }
+
+        public override string ToString() => 
+            JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+    }
+
+    public class ViewDefinitionSelectColumnTag : BackboneElement {
+        public required string Name { get; set; }
+        public required string Value { get; set; }
+
+        public override string ToString() => 
+            JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+    }
+
+    public class ViewDefinitionWhere : BackboneElement {
+        public string? Description { get; set; }
+        public required string Path { get; set; }
+
+        public override string ToString() => 
+            JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+    }
+
+
+    public override string ToString() => 
+        JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+}
+
+"
+`;
+
+exports[`SQL-on-FHIR C# Generation should generate DomainResource for R5 1`] = `
+"// WARNING: This file is autogenerated by @atomic-ehr/codegen.
+// GitHub: https://github.com/atomic-ehr/codegen
+// Any manual changes made to this file may be overwritten.
+
+
+namespace Fhir.Types.Hl7FhirR5Core;
+
+public class DomainResource : Resource {
+    public Resource[]? Contained { get; set; }
+    public Extension[]? Extension { get; set; }
+    public Extension[]? ModifierExtension { get; set; }
+    public Narrative? Text { get; set; }
+
+    public override string ToString() => 
+        JsonSerializer.Serialize(this, Helper.JsonSerializerOptions);
+
+}
+
+"
+`;