fix(build): Fix git version parsing (#193)

Fix an issue with reading git tags that would always result in a (dev) version
Opentrons · Jul 12, 2021 · 752aaae · 752aaae
1 parent fc423ee
commit 752aaae
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diff --git a/.python-version b/.python-version
diff --git a/stm32-modules/heater-shaker/src/CMakeLists.txt b/stm32-modules/heater-shaker/src/CMakeLists.txt
@@ -15,7 +15,7 @@ if (NOT TAGNAME)
 endif()
 
 string(REGEX MATCH "@.*$" PREPENDED_VERSION ${TAGNAME})
-string(SUBSTRING ${PREPENDED_VERSION} 1 -l VERSION)
+string(SUBSTRING "${PREPENDED_VERSION}" 1 -1 VERSION)
 if (NOT VERSION)
   set(VERSION "(dev)")
 endif()