make forkexec work properly when . in PATH

packages/kernel/src/wasm/posix/fork-exec.ts

@@ -26,7 +26,7 @@ extern int python_wasm_fork_exec(
 import debug from "debug";
 import { nativeToWasm } from "./errno";
 import constants from "./constants";
-import { join } from "path";
+import { join, resolve } from "path";
 
 const log = debug("posix:fork-exec");
 
@@ -235,7 +235,7 @@ export default function fork_exec({
           // search path
           log("cowasm_vforkexec", "go through search path to find", argv[0]);
           for (const dir of path.split(":")) {
-            const pathToCmd = join(dir, argv[0]);
+            const pathToCmd = join(resolve(dir), argv[0]);
             try {
               const stat = fs.statSync(pathToCmd);
               if (stat.mode & fs.constants.S_IXUSR) {

packages/py-ipython/Makefile

@@ -0,0 +1,25 @@
+include ../build/Makefile-vars
+
+all: wasm
+
+# See https://pypi.org/project/ipython/#files
+# Note that with PYPI (unlike github) you have to copy the entire URL to the source
+# every single time.  Updating the version is not sufficient.
+VERSION = 8.6.0
+URL = https://files.pythonhosted.org/packages/7f/59/05e94e067afb61460f0d5229a1edb800e2f65b8436085fad9cd262d80d45/ipython-8.6.0.tar.gz
+TARBALL = ${UPSTREAM}/ipython-${VERSION}.tar.gz
+
+include ../build/Makefile-rules
+
+${BUILD_WASM}/.built: ${BUILD_WASM}/.build
+	touch ${BUILD_WASM}/.built
+
+test: ${BUILD_WASM}/.built
+	cd ${BUILD_WASM}/build/lib \
+		&& PYTHONPATH=`pwd` python-wasm mpmath/tests/runtests.py
+
+${DIST_WASM}/.built: ${BUILD_WASM}/.built
+	cd ${BUILD_WASM} \
+		&& ${BIN}/python-wasm setup.py build
+	touch ${DIST_WASM}/.built
+