diff --git a/include/vcpkg/base/files.h b/include/vcpkg/base/files.h
index 7b43319223..57694986a1 100644
--- a/include/vcpkg/base/files.h
+++ b/include/vcpkg/base/files.h
@@ -52,10 +52,10 @@ namespace vcpkg
         }
     };
 
-    bool is_symlink(FileType s);
-    bool is_regular_file(FileType s);
-    bool is_directory(FileType s);
-    bool exists(FileType s);
+    constexpr bool is_symlink(FileType s) noexcept { return s == FileType::symlink || s == FileType::junction; }
+    constexpr bool is_regular_file(FileType s) noexcept { return s == FileType::regular; }
+    constexpr bool is_directory(FileType s) noexcept { return s == FileType::directory; }
+    constexpr bool exists(FileType s) noexcept { return s != FileType::not_found && s != FileType::none; }
 
     struct FilePointer
     {
diff --git a/include/vcpkg/commands.install.h b/include/vcpkg/commands.install.h
index 22d7f8f394..eb34c0f6fc 100644
--- a/include/vcpkg/commands.install.h
+++ b/include/vcpkg/commands.install.h
@@ -56,8 +56,8 @@ namespace vcpkg
         Path m_listfile;
 
     public:
-        const Path& destination() const;
-        const Path& listfile() const;
+        const Path& destination() const noexcept { return this->m_destination; }
+        const Path& listfile() const noexcept { return this->m_listfile; }
     };
 
     void install_package_and_write_listfile(const Filesystem& fs,
diff --git a/src/vcpkg/base/files.cpp b/src/vcpkg/base/files.cpp
index e466e97163..dec715d4f2 100644
--- a/src/vcpkg/base/files.cpp
+++ b/src/vcpkg/base/files.cpp
@@ -1366,11 +1366,6 @@ namespace vcpkg
 
     const char* to_printf_arg(const Path& p) noexcept { return p.m_str.c_str(); }
 
-    bool is_symlink(FileType s) { return s == FileType::symlink || s == FileType::junction; }
-    bool is_regular_file(FileType s) { return s == FileType::regular; }
-    bool is_directory(FileType s) { return s == FileType::directory; }
-    bool exists(FileType s) { return s != FileType::not_found && s != FileType::none; }
-
     FilePointer::FilePointer(const Path& path) : m_fs(nullptr), m_path(path) { }
     FilePointer::FilePointer() noexcept : m_fs(nullptr), m_path{} { }
 
diff --git a/src/vcpkg/commands.install.cpp b/src/vcpkg/commands.install.cpp
index 5f750f3658..c2ef6ced1b 100644
--- a/src/vcpkg/commands.install.cpp
+++ b/src/vcpkg/commands.install.cpp
@@ -42,10 +42,6 @@ namespace vcpkg
         return dirs;
     }
 
-    const Path& InstallDir::destination() const { return this->m_destination; }
-
-    const Path& InstallDir::listfile() const { return this->m_listfile; }
-
     void install_package_and_write_listfile(const Filesystem& fs,
                                             const Path& source_dir,
                                             const InstallDir& destination_dir)