diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index 8477fd41f..591911248 100644
--- a/conda/artiq-dev/meta.yaml
+++ b/conda/artiq-dev/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:12] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:8] }}
 
 requirements:
   run:
diff --git a/conda/artiq-kc705-nist_clock/meta.yaml b/conda/artiq-kc705-nist_clock/meta.yaml
index 41481fe12..ed7c3b320 100644
--- a/conda/artiq-kc705-nist_clock/meta.yaml
+++ b/conda/artiq-kc705-nist_clock/meta.yaml
@@ -8,13 +8,13 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:12] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:8] }}
 
 requirements:
   build:
-    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
   run:
-    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 
 about:
   home: https://m-labs.hk/artiq
diff --git a/conda/artiq-kc705-nist_qc2/meta.yaml b/conda/artiq-kc705-nist_qc2/meta.yaml
index 8980c55dd..e54280cf5 100644
--- a/conda/artiq-kc705-nist_qc2/meta.yaml
+++ b/conda/artiq-kc705-nist_qc2/meta.yaml
@@ -8,13 +8,13 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:12] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:8] }}
 
 requirements:
   build:
-    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
   run:
-    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 
 about:
   home: https://m-labs.hk/artiq
diff --git a/conda/artiq-kc705-phaser/meta.yaml b/conda/artiq-kc705-phaser/meta.yaml
index 74361922f..41465da74 100644
--- a/conda/artiq-kc705-phaser/meta.yaml
+++ b/conda/artiq-kc705-phaser/meta.yaml
@@ -8,13 +8,13 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:12] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:8] }}
 
 requirements:
   build:
-    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq-dev {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
   run:
-    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:12]) if "GIT_DESCRIBE_TAG" in environ else "" }}
+    - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_FULL_HASH", "")[:8]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 
 about:
   home: https://m-labs.hk/artiq
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index a2895825e..1d758fd92 100644
--- a/conda/artiq/meta.yaml
+++ b/conda/artiq/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:12] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_FULL_HASH", "")[:8] }}
 
 requirements:
   build: