diff --git a/src/nimblepkg/packageparser.nim b/src/nimblepkg/packageparser.nim
index 17f4464..04a5730 100644
--- a/src/nimblepkg/packageparser.nim
+++ b/src/nimblepkg/packageparser.nim
@@ -277,6 +277,15 @@ proc readPackageInfoFromNimble(path: string; result: var PackageInfo) =
   else:
     raise newException(ValueError, "Cannot open package info: " & path)
 
+proc inferInstallRules(pkgInfo: var PackageInfo, options: Options) =
+  # Binary packages shouldn't install .nim files by default.
+  # (As long as the package info doesn't explicitly specify what should be
+  # installed.)
+  let installInstructions =
+    pkgInfo.installDirs.len + pkgInfo.installExt.len + pkgInfo.installFiles.len
+  if installInstructions == 0 and pkgInfo.bin.len > 0:
+    pkgInfo.skipExt.add("nim")
+
 proc readPackageInfo(nf: NimbleFile, options: Options,
     onlyMinimalInfo=false): PackageInfo =
   ## Reads package info from the specified Nimble file.
@@ -354,6 +363,9 @@ proc readPackageInfo(nf: NimbleFile, options: Options,
   if not result.isMinimal:
     options.pkgInfoCache[nf] = result
 
+  # Apply rules to infer which files should/shouldn't be installed. See #469.
+  inferInstallRules(result, options)
+
   # Validate the rest of the package info last.
   if not options.disableValidation:
     validateVersion(result.version)
diff --git a/tests/packageStructure/validBinary/y.nim b/tests/packageStructure/validBinary/y.nim
new file mode 100644
index 0000000..e69de29
diff --git a/tests/packageStructure/validBinary/y.nimble b/tests/packageStructure/validBinary/y.nimble
new file mode 100644
index 0000000..087141b
--- /dev/null
+++ b/tests/packageStructure/validBinary/y.nimble
@@ -0,0 +1,13 @@
+# Package
+
+version       = "0.1.0"
+author        = "Dominik Picheta"
+description   = "Correctly structured package Y"
+license       = "MIT"
+
+bin = @["y"]
+
+# Dependencies
+
+requires "nim >= 0.15.0"
+
diff --git a/tests/packageStructure/validBinary/yWrong/foobar.nim b/tests/packageStructure/validBinary/yWrong/foobar.nim
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/tests/packageStructure/validBinary/yWrong/foobar.nim
@@ -0,0 +1 @@
+
diff --git a/tests/packageStructure/y/y.nimble b/tests/packageStructure/y/y.nimble
index 0ce52f9..4eb3ba5 100644
--- a/tests/packageStructure/y/y.nimble
+++ b/tests/packageStructure/y/y.nimble
@@ -5,6 +5,7 @@ author        = "Dominik Picheta"
 description   = "Incorrectly structured package Y"
 license       = "MIT"
 
+installExt = @["nim"]
 bin = @["y"]
 
 # Dependencies
diff --git a/tests/tester.nim b/tests/tester.nim
index c26bb00..c408777 100644
--- a/tests/tester.nim
+++ b/tests/tester.nim
@@ -92,7 +92,7 @@ test "can build with #head and versioned package (#289)":
 
 test "can validate package structure (#144)":
   # Test that no warnings are produced for correctly structured packages.
-  for package in ["a", "b", "c"]:
+  for package in ["a", "b", "c", "validBinary"]:
     cd "packageStructure/" & package:
       let (output, exitCode) = execNimble(["install", "-y"])
       check exitCode == QuitSuccess