Fix merge for an Instance

[camsaul]

workaround for clj-commons/potemkin#70

[codecov]

Codecov Report

Base: 81.75% // Head: 81.67% // Decreases project coverage by -0.07% ⚠️

Coverage data is based on head (c4656fd) compared to base (a539c38).
Patch coverage: 57.14% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
- Coverage   81.75%   81.67%   -0.08%     
==========================================
  Files          34       34              
  Lines        2313     2314       +1     
  Branches      170      175       +5     
==========================================
- Hits         1891     1890       -1     
+ Misses        252      249       -3     
- Partials      170      175       +5     

Impacted Files	Coverage Δ
src/toucan2/instance.clj	77.53% <45.45%> (-2.18%)	⬇️
src/toucan2/magic_map.clj	78.26% <100.00%> (ø)
src/toucan2/tools/transformed.clj	85.71% <100.00%> (+0.68%)	⬆️

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