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Add an environment variable to mount extra directories into pyodide python command (#3742) 

Helpful for build systems which place stuff in temp folders. I'm working on cibuildwheel support which needs this.
This commit is contained in:
Hood Chatham 2023-04-07 04:28:36 -07:00 committed by GitHub
parent a038ac17d5
commit 2887a24090
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1 changed files with 7 additions and 3 deletions
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src/templates/python
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@ -57,7 +57,7 @@ const fs = require("fs");
* names it is possible this could break. The most surprising one here is tmp, I
* am not sure why but if we link tmp then the process silently fails.
*/
function nativeDirsToLink() {
function rootDirsToMount() {
const skipDirs = ["dev", "lib", "proc", "tmp"];
return fs
.readdirSync("/")
@ -65,14 +65,18 @@ function nativeDirsToLink() {
.map((dir) => "/" + dir);
}
function dirsToMount() {
extra_mounts = process.env["_PYODIDE_EXTRA_MOUNTS"] || "";
return rootDirsToMount().concat(extra_mounts.split(":").filter(s => s))
}
async function main() {
let args = process.argv.slice(2);
const _node_mounts = nativeDirsToLink();
try {
py = await loadPyodide({
args,
fullStdLib: false,
_node_mounts,
_node_mounts: dirsToMount(),
homedir: process.cwd(),
// Strip out messages written to stderr while loading
// After Pyodide is loaded we will replace stdstreams with setupStreams.