diff --git a/lib/win_util.cpp b/lib/win_util.cpp
index bcc16b95f4..d9b70f9cc9 100644
--- a/lib/win_util.cpp
+++ b/lib/win_util.cpp
@@ -26,9 +26,8 @@
 #include "str_replace.h"
 #include "str_util.h"
 
-/**
- * This function terminates a process by process id instead of a handle.
- **/
+// terminate a process by process ID instead of a handle.
+//
 BOOL TerminateProcessById( DWORD dwProcessID ) {
     HANDLE hProcess;
     BOOL bRetVal = FALSE;
@@ -187,3 +186,50 @@ char* windows_format_error_string(
 
     return pszBuf;
 }
+
+// WSL_CMD: run commands in a WSL distro
+
+typedef HRESULT(WINAPI *PWslLaunch)(
+    PCWSTR, PCWSTR, BOOL, HANDLE, HANDLE, HANDLE, HANDLE*
+);
+
+static PWslLaunch pWslLaunch = NULL;
+static HINSTANCE wsl_lib = NULL;
+
+int WSL_CMD::setup() {
+    in_read = NULL;
+    in_write = NULL;
+    out_read = NULL;
+    out_write = NULL;
+
+    if (!pWslLaunch) {
+        wsl_lib = LoadLibraryA("wslapi.dll");
+        if (!wsl_lib) return -1;
+        pWslLaunch = (PWslLaunch)GetProcAddress(wsl_lib, "WslLaunch");
+        if (!pWslLaunch) return -1;
+    }
+
+    SECURITY_ATTRIBUTES sa;
+    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+    sa.bInheritHandle = TRUE;
+    sa.lpSecurityDescriptor = NULL;
+
+    if (!CreatePipe(&out_read, &out_write, &sa, 0)) return -1;
+    if (!SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)) return -1;
+    if (!CreatePipe(&in_read, &in_write, &sa, 0)) return -1;
+    if (!SetHandleInformation(in_write, HANDLE_FLAG_INHERIT, 0)) return -1;
+    return 0;
+}
+
+int WSL_CMD::run_command(
+    const std::string distro_name, const std::string command,
+    HANDLE* proc_handle, bool use_cwd
+) {
+    HRESULT ret = pWslLaunch(
+        boinc_ascii_to_wide(distro_name).c_str(),
+        boinc_ascii_to_wide(command).c_str(),
+        use_cwd, in_read, out_write, out_write,
+        proc_handle
+    );
+    return (ret == S_OK)?0:-1;
+}
diff --git a/lib/win_util.h b/lib/win_util.h
index 35345e70e4..4dadc85b96 100644
--- a/lib/win_util.h
+++ b/lib/win_util.h
@@ -28,4 +28,29 @@ extern char* windows_format_error_string(
     unsigned long dwError, char* pszBuf, int iSize ...
 );
 
+// struct for running a WSL command, connected via pipes
+//
+struct WSL_CMD {
+    HANDLE in_read = NULL;
+    HANDLE in_write = NULL;
+    HANDLE out_read = NULL;
+    HANDLE out_write = NULL;
+
+    ~WSL_CMD() {
+        if (in_read) CloseHandle(in_read);
+        if (in_write) CloseHandle(in_write);
+        if (out_read) CloseHandle(out_read);
+        if (out_write) CloseHandle(out_write);
+    }
+
+    int setup();
+
+    // run command, direct both stdout and stderr to the out pipe
+    //
+    int run_command(
+        const std::string distro_name, const std::string command,
+        HANDLE* proc_handle, bool use_cwd = false
+    );
+};
+
 #endif
diff --git a/lib/wslinfo.cpp b/lib/wslinfo.cpp
index 610eff4285..8e6b9582af 100644
--- a/lib/wslinfo.cpp
+++ b/lib/wslinfo.cpp
@@ -15,16 +15,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with BOINC.  If not, see <http://www.gnu.org/licenses/>.
 
-#ifdef _WIN64
-#include "win_util.h"
-#endif
-
 #include "wslinfo.h"
 
-WSL_DISTRO::WSL_DISTRO() {
-    clear();
-}
-
 void WSL_DISTRO::clear() {
     distro_name = "";
     os_name = "";
@@ -116,50 +108,3 @@ int WSL_DISTROS::parse(XML_PARSER& xp) {
     }
     return ERR_XML_PARSE;
 }
-
-#ifdef _WIN64
-typedef HRESULT(WINAPI *PWslLaunch)(
-    PCWSTR, PCWSTR, BOOL, HANDLE, HANDLE, HANDLE, HANDLE*
-);
-
-static PWslLaunch pWslLaunch = NULL;
-static HINSTANCE wsl_lib = NULL;
-
-int WSL_CMD::setup() {
-    in_read = NULL;
-    in_write = NULL;
-    out_read = NULL;
-    out_write = NULL;
-
-    if (!pWslLaunch) {
-        wsl_lib = LoadLibraryA("wslapi.dll");
-        if (!wsl_lib) return -1;
-        pWslLaunch = (PWslLaunch)GetProcAddress(wsl_lib, "WslLaunch");
-        if (!pWslLaunch) return -1;
-    }
-
-    SECURITY_ATTRIBUTES sa;
-    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
-    sa.bInheritHandle = TRUE;
-    sa.lpSecurityDescriptor = NULL;
-
-    if (!CreatePipe(&out_read, &out_write, &sa, 0)) return -1;
-    if (!SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)) return -1;
-    if (!CreatePipe(&in_read, &in_write, &sa, 0)) return -1;
-    if (!SetHandleInformation(in_write, HANDLE_FLAG_INHERIT, 0)) return -1;
-    return 0;
-}
-
-int WSL_CMD::run_command(
-    const std::string distro_name, const std::string command,
-    HANDLE* proc_handle, bool use_cwd
-) {
-    HRESULT ret = pWslLaunch(
-        boinc_ascii_to_wide(distro_name).c_str(),
-        boinc_ascii_to_wide(command).c_str(),
-        use_cwd, in_read, out_write, out_write,
-        proc_handle
-    );
-    return (ret == S_OK)?0:-1;
-}
-#endif // _WIN64
diff --git a/lib/wslinfo.h b/lib/wslinfo.h
index c54b71e192..ba041dca4d 100644
--- a/lib/wslinfo.h
+++ b/lib/wslinfo.h
@@ -15,6 +15,9 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with BOINC.  If not, see <http://www.gnu.org/licenses/>.
 
+// structs describing WSL (Windows Subsystem for Linux) distros.
+// Used in Win client and also in server code (for plan class logic)
+
 #ifndef BOINC_WSLINFO_H
 #define BOINC_WSLINFO_H
 
@@ -45,7 +48,9 @@ struct WSL_DISTRO {
     std::string docker_compose_version;
         // version of Docker Compose
 
-    WSL_DISTRO();
+    WSL_DISTRO(){
+        clear();
+    };
     void clear();
     void write_xml(MIOFILE&);
     int parse(XML_PARSER&);
@@ -62,31 +67,4 @@ struct WSL_DISTROS {
     int parse(XML_PARSER&);
 };
 
-#ifdef _WIN64
-// struct for running a WSL command, connected via pipes
-//
-struct WSL_CMD {
-    HANDLE in_read = NULL;
-    HANDLE in_write = NULL;
-    HANDLE out_read = NULL;
-    HANDLE out_write = NULL;
-
-    ~WSL_CMD() {
-        if (in_read) CloseHandle(in_read);
-        if (in_write) CloseHandle(in_write);
-        if (out_read) CloseHandle(out_read);
-        if (out_write) CloseHandle(out_write);
-    }
-
-    int setup();
-
-    // run command, direct both stdout and stderr to the out pipe
-    //
-    int run_command(
-        const std::string distro_name, const std::string command,
-        HANDLE* proc_handle, bool use_cwd = false
-    );
-};
-#endif
-
 #endif