diff --git a/Snakefile b/Snakefile
index 5ef2eaa2..6f0eba79 100644
--- a/Snakefile
+++ b/Snakefile
@@ -8,8 +8,12 @@ if not config:
 if not config.get("transform"):
     configfile: "ingest/config/config.yaml"
 
-# WIP: BIG COMMENTS HERE, write documentation on the reasons this workaround is necessary. TK
-my_basedir="ingest"
+# Add the hard-coded ingest basedir to the workflow config so that we can
+# pass it to the module ingest workflow. This will allow shell scripts to
+# use the proper paths for local script invocation since we cannot set the
+# workdir separately for module workflows.
+# This work around is based on https://stackoverflow.com/a/66890412
+config["ingest_basedir"] = f"{workflow.current_basedir}/ingest"
 
 serotypes = ['all', 'denv1', 'denv2', 'denv3', 'denv4']
 
diff --git a/ingest/Snakefile b/ingest/Snakefile
index f3fca0df..3fb79a14 100644
--- a/ingest/Snakefile
+++ b/ingest/Snakefile
@@ -2,7 +2,10 @@ if not config:
 
     configfile: "config/config.yaml"
 
-my_basedir = workflow.current_basedir
+
+if not config.get("ingest_basedir"):
+
+    config["ingest_basedir"] = workflow.current_basedir
 
 send_slack_notifications = config.get("send_slack_notifications", False)
 
diff --git a/ingest/workflow/snakemake_rules/fetch_sequences.smk b/ingest/workflow/snakemake_rules/fetch_sequences.smk
index 11fffb59..7f334a7d 100644
--- a/ingest/workflow/snakemake_rules/fetch_sequences.smk
+++ b/ingest/workflow/snakemake_rules/fetch_sequences.smk
@@ -33,7 +33,7 @@ rule fetch_from_genbank:
         serotype_tax_id=download_serotype,
     shell:
         """
-        {my_basedir}/bin/fetch-from-genbank {params.serotype_tax_id} > {output.genbank_ndjson}
+        {config[ingest_basedir]}/bin/fetch-from-genbank {params.serotype_tax_id} > {output.genbank_ndjson}
         """
 
 
diff --git a/ingest/workflow/snakemake_rules/slack_notifications.smk b/ingest/workflow/snakemake_rules/slack_notifications.smk
index 1c6e28a2..b868cf3d 100644
--- a/ingest/workflow/snakemake_rules/slack_notifications.smk
+++ b/ingest/workflow/snakemake_rules/slack_notifications.smk
@@ -31,7 +31,7 @@ rule notify_on_genbank_record_change:
         genbank_filename="genbank_{serotype}.ndjson.xz",
     shell:
         """
-        {my_basedir}/bin/notify-on-record-change {input.genbank_ndjson} {params.s3_src:q}/{params.genbank_filename:q} Genbank
+        {config[ingest_basedir]}/bin/notify-on-record-change {input.genbank_ndjson} {params.s3_src:q}/{params.genbank_filename:q} Genbank
         """
 
 
@@ -45,13 +45,13 @@ rule notify_on_metadata_diff:
         metadata_filename="metadata_{serotype}.tsv.gz",
     shell:
         """
-        {my_basedir}/bin/notify-on-diff {input.metadata} {params.s3_src:q}/{params.metadata_filename:q}
+        {config[ingest_basedir]}/bin/notify-on-diff {input.metadata} {params.s3_src:q}/{params.metadata_filename:q}
         """
 
 
 onstart:
-    shell("{my_basedir}/bin/notify-on-job-start")
+    shell("{config[ingest_basedir]}/bin/notify-on-job-start")
 
 
 onerror:
-    shell("{my_basedir}/bin/notify-on-job-fail")
+    shell("{config[ingest_basedir]}/bin/notify-on-job-fail")
diff --git a/ingest/workflow/snakemake_rules/transform.smk b/ingest/workflow/snakemake_rules/transform.smk
index 613040c8..4e0d52fc 100644
--- a/ingest/workflow/snakemake_rules/transform.smk
+++ b/ingest/workflow/snakemake_rules/transform.smk
@@ -65,31 +65,31 @@ rule transform:
     shell:
         """
         (cat {input.sequences_ndjson} \
-            | {my_basedir}/bin/transform-field-names \
+            | {config[ingest_basedir]}/bin/transform-field-names \
                 --field-map {params.field_map} \
             | augur curate normalize-strings \
-            | {my_basedir}/bin/transform-strain-names \
+            | {config[ingest_basedir]}/bin/transform-strain-names \
                 --strain-regex {params.strain_regex} \
                 --backup-fields {params.strain_backup_fields} \
-            | {my_basedir}/bin/transform-date-fields \
+            | {config[ingest_basedir]}/bin/transform-date-fields \
                 --date-fields {params.date_fields} \
                 --expected-date-formats {params.expected_date_formats} \
-            | {my_basedir}/bin/transform-genbank-location \
-            | {my_basedir}/bin/transform-string-fields \
+            | {config[ingest_basedir]}/bin/transform-genbank-location \
+            | {config[ingest_basedir]}/bin/transform-string-fields \
                 --titlecase-fields {params.titlecase_fields} \
                 --articles {params.articles} \
                 --abbreviations {params.abbreviations} \
-            | {my_basedir}/bin/transform-authors \
+            | {config[ingest_basedir]}/bin/transform-authors \
                 --authors-field {params.authors_field} \
                 --default-value {params.authors_default_value} \
                 --abbr-authors-field {params.abbr_authors_field} \
-            | {my_basedir}/bin/apply-geolocation-rules \
+            | {config[ingest_basedir]}/bin/apply-geolocation-rules \
                 --geolocation-rules {input.all_geolocation_rules} \
-            | {my_basedir}/bin/post_process_metadata.py \
-            | {my_basedir}/bin/merge-user-metadata \
+            | {config[ingest_basedir]}/bin/post_process_metadata.py \
+            | {config[ingest_basedir]}/bin/merge-user-metadata \
                 --annotations {input.annotations} \
                 --id-field {params.annotations_id} \
-            | {my_basedir}/bin/ndjson-to-tsv-and-fasta \
+            | {config[ingest_basedir]}/bin/ndjson-to-tsv-and-fasta \
                 --metadata-columns {params.metadata_columns} \
                 --metadata {output.metadata} \
                 --fasta {output.sequences} \
diff --git a/ingest/workflow/snakemake_rules/trigger_rebuild.smk b/ingest/workflow/snakemake_rules/trigger_rebuild.smk
index 80a11b70..b360abac 100644
--- a/ingest/workflow/snakemake_rules/trigger_rebuild.smk
+++ b/ingest/workflow/snakemake_rules/trigger_rebuild.smk
@@ -15,5 +15,5 @@ rule trigger_build:
         touch("data/trigger/rebuild_{serotype}.done")
     shell:
         """
-        {my_basedir}/bin/trigger-on-new-data {input.metadata_upload} {input.fasta_upload}
+        {config[ingest_basedir]}/bin/trigger-on-new-data {input.metadata_upload} {input.fasta_upload}
         """
diff --git a/ingest/workflow/snakemake_rules/upload.smk b/ingest/workflow/snakemake_rules/upload.smk
index 56895200..40d992af 100644
--- a/ingest/workflow/snakemake_rules/upload.smk
+++ b/ingest/workflow/snakemake_rules/upload.smk
@@ -56,7 +56,7 @@ rule upload_to_s3:
         cloudfront_domain=config["upload"].get("s3", {}).get("cloudfront_domain", ""),
     shell:
         """
-        {my_basedir}/bin/upload-to-s3 \
+        {config[ingest_basedir]}/bin/upload-to-s3 \
             {params.quiet} \
             {input.file_to_upload:q} \
             {params.s3_dst:q}/{wildcards.remote_file_name:q} \