Micromamba improvement (#148)HEAD1.7.0master

* Update micromamba installation logic

* Split installation from micromamba() into micromamba_install()
* Return -1 when micromamba cannot be installed
* Add stasis.ini option "indexer.micromamba_download_url"
* Add global variable micromamba_download_url
* The installation function attempts two known-good URLs by default
*

* Add indexer arugment '--micromamba-download-url'

* Add is_file_compressed() function to utils
* Call micromamba_install() from tests

* Add space in usage statement

* Fix usage output when option array contains arguments without short options

* Add --micromamba-download-url to README.md

1 files changed, 6 insertions, 0 deletions

diff --git a/src/cli/stasis_indexer/helpers.c b/src/cli/stasis_indexer/helpers.c
index 3ef96e4..b89622b 100644
--- a/src/cli/stasis_indexer/helpers.c
+++ b/src/cli/stasis_indexer/helpers.c
@@ -157,6 +157,7 @@ int micromamba_configure(const struct Delivery *ctx, struct MicromambaInfo *m) {
     m->conda_prefix = globals.conda_install_prefix;
     m->micromamba_prefix = micromamba_prefix;
     m->download_dir = ctx->storage.tmpdir;
+    m->download_url = globals.micromamba_download_url;
 
     const size_t pathvar_len = strlen(getenv("PATH")) + strlen(m->micromamba_prefix) + strlen(m->conda_prefix) + 3 + 4 + 1;
     // ^^^^^^^^^^^^^^^^^^
@@ -172,6 +173,11 @@ int micromamba_configure(const struct Delivery *ctx, struct MicromambaInfo *m) {
     setenv("PATH", pathvar, 1);
     guard_free(pathvar);
 
+    if (micromamba_install(m)) {
+        SYSERROR("Micromamba installation failed");
+        return -1;
+    }
+
     status += micromamba(m, "config prepend --env channels conda-forge");
     if (!globals.verbose) {
         status += micromamba(m, "config set --env quiet true");